@prefix :        <https://www.web3d.org/x3d/content/examples/Vrml2Sourcebook/Chapter20Lighting/Figure20_04HeadlightSpheres.ttl#> .
@prefix owl:     <http://www.w3.org/2002/07/owl#> .
@prefix rdf:     <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs:    <http://www.w3.org/2000/01/rdf-schema#> .
@prefix schema:  <http://schema.org/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix xsd:     <http://www.w3.org/2001/XMLSchema#> .
@prefix x3d:     <https://www.web3d.org/specifications/x3d-4.1.xsd#> .
@prefix x3do:    <https://www.web3d.org/specifications/X3dOntology4.1#> .

:X3D a owl:NamedIndividual, x3do:X3D ;
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  x3do:hasScene :Scene ;
  x3do:profile 'Interchange' ;
  x3do:version '3.0' ;
  x3do:noNamespaceSchemaLocation 'https://www.web3d.org/specifications/x3d-3.0.xsd' .
:head a owl:NamedIndividual, x3do:head ;
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  x3do:content 'Figure20_04HeadlightSpheres.x3d' ;
  x3do:name 'title' .
:meta_1_2 a owl:NamedIndividual, x3do:meta ;
  x3do:hasParent :head ;
  x3do:content 'Figure 20.4, The VRML 2.0 Sourcebook, Copyright [1997] By Andrea L. Ames, David R. Nadeau, and John L. Moreland' ;
  x3do:name 'creator' .
:meta_1_3 a owl:NamedIndividual, x3do:meta ;
  x3do:hasParent :head ;
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  x3do:name 'reference' .
:meta_1_4 a owl:NamedIndividual, x3do:meta ;
  x3do:hasParent :head ;
  x3do:content 'Don Brutzman' ;
  x3do:name 'translator' .
:meta_1_5 a owl:NamedIndividual, x3do:meta ;
  x3do:hasParent :head ;
  x3do:content '16 August 2000' ;
  x3do:name 'created' .
:meta_1_6 a owl:NamedIndividual, x3do:meta ;
  x3do:hasParent :head ;
  x3do:content '20 October 2019' ;
  x3do:name 'modified' .
:meta_1_7 a owl:NamedIndividual, x3do:meta ;
  x3do:hasParent :head ;
  x3do:content 'A sphere world illuminated by the headlight. Also see Figures 20.4, 20.6a, 20.6b, 20.7, 20.8 for comparison.' ;
  x3do:name 'description' .
:meta_1_8 a owl:NamedIndividual, x3do:meta ;
  x3do:hasParent :head ;
  x3do:content 'Figure20_06aPointLightSpheres.x3d' ;
  x3do:name 'reference' .
:meta_1_9 a owl:NamedIndividual, x3do:meta ;
  x3do:hasParent :head ;
  x3do:content 'Figure20_06bPointLightSpheresIntensity.x3d' ;
  x3do:name 'reference' .
:meta_1_10 a owl:NamedIndividual, x3do:meta ;
  x3do:hasParent :head ;
  x3do:content 'Figure20_07PointLightSpheresAttenuation.x3d' ;
  x3do:name 'reference' .
:meta_1_11 a owl:NamedIndividual, x3do:meta ;
  x3do:hasParent :head ;
  x3do:content 'Figure20_08PointLightSpheresSmallRadius.x3d' ;
  x3do:name 'reference' .
:meta_1_12 a owl:NamedIndividual, x3do:meta ;
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:meta_1_13 a owl:NamedIndividual, x3do:meta ;
  x3do:hasParent :head ;
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  x3do:name 'generator' .
:meta_1_14 a owl:NamedIndividual, x3do:meta ;
  x3do:hasParent :head ;
  x3do:content '../../license.html' ;
  x3do:name 'license' .
:meta dcterms:title "Figure20_04HeadlightSpheres.x3d" .
:meta dcterms:creator "Figure 20.4, The VRML 2.0 Sourcebook, Copyright [1997] By Andrea L. Ames, David R. Nadeau, and John L. Moreland" .
:meta dcterms:reference "http://www.wiley.com/legacy/compbooks/vrml2sbk/ch20/20fig04.htm" .
:meta dcterms:translator "Don Brutzman" .
:meta dcterms:created "16 August 2000" .
:meta dcterms:modified "20 October 2019" .
:meta dcterms:description "A sphere world illuminated by the headlight. Also see Figures 20.4, 20.6a, 20.6b, 20.7, 20.8 for comparison." .
:meta dcterms:reference "Figure20_06aPointLightSpheres.x3d" .
:meta dcterms:reference "Figure20_06bPointLightSpheresIntensity.x3d" .
:meta dcterms:reference "Figure20_07PointLightSpheresAttenuation.x3d" .
:meta dcterms:reference "Figure20_08PointLightSpheresSmallRadius.x3d" .
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:meta dcterms:license "../../license.html" .
:Scene a owl:NamedIndividual, x3do:Scene ;
  x3do:hasParent :X3D ;
  x3do:hasChildren :WorldInfo_2_1, :Viewpoint_2_2, :Transform_2_3 .
:WorldInfo_2_1 a owl:NamedIndividual, x3do:WorldInfo ;
  x3do:hasParent :Scene ;
  x3do:title 'Figure20_04HeadlightSpheres.x3d' .
:Viewpoint_2_2 a owl:NamedIndividual, x3do:Viewpoint ;
  x3do:hasParent :Scene ;
  x3do:description 'Spheres' ;
  x3do:position ( 0 0 30 ) .
:Transform_2_3 a owl:NamedIndividual, x3do:Transform ;
  x3do:hasParent :Scene ;
  x3do:hasChildren :BallRow, :Transform_2_3_2, :Transform_2_3_3, :Transform_2_3_4, :Transform_2_3_5, :Transform_2_3_6 ;
  x3do:translation ( -7.5 -7.5 0.0 ) .
:BallRow a owl:NamedIndividual, x3do:Group ;
  x3do:hasParent :Transform_2_3 ;
  x3do:hasChildren :Ball, :Transform_2_3_1_2, :Transform_2_3_1_3, :Transform_2_3_1_4, :Transform_2_3_1_5, :Transform_2_3_1_6 ;
  x3do:DEF 'BallRow' .
:Ball a owl:NamedIndividual, x3do:Shape ;
  x3do:hasParent :BallRow ;
  x3do:hasAppearance :Appearance_2_3_1_1_1 ;
  x3do:hasGeometry :Sphere_2_3_1_1_2 ;
  x3do:DEF 'Ball' .
:Appearance_2_3_1_1_1 a owl:NamedIndividual, x3do:Appearance ;
  x3do:hasParent :Ball ;
  x3do:hasMaterial :Material_2_3_1_1_1_1 .
:Material_2_3_1_1_1_1 a owl:NamedIndividual, x3do:Material ;
  x3do:hasParent :Appearance_2_3_1_1_1 ;
  x3do:diffuseColor ( 1 0.5 0.1 ) .
:Sphere_2_3_1_1_2 a owl:NamedIndividual, x3do:Sphere ;
  x3do:hasParent :Ball .
:Transform_2_3_1_2 a owl:NamedIndividual, x3do:Transform ;
  x3do:hasParent :BallRow ;
  x3do:hasChildren :Ball-USE-1 ;
  x3do:translation ( 3 0 0 ) .
:Ball-USE-1 a owl:NamedIndividual, x3do:Shape ;
  x3do:hasParent :Transform_2_3_1_2 ;
  owl:sameAs :Ball . # DEF matching this USE
:Transform_2_3_1_3 a owl:NamedIndividual, x3do:Transform ;
  x3do:hasParent :BallRow ;
  x3do:hasChildren :Ball-USE-2 ;
  x3do:translation ( 6 0 0 ) .
:Ball-USE-2 a owl:NamedIndividual, x3do:Shape ;
  x3do:hasParent :Transform_2_3_1_3 ;
  owl:sameAs :Ball . # DEF matching this USE
:Transform_2_3_1_4 a owl:NamedIndividual, x3do:Transform ;
  x3do:hasParent :BallRow ;
  x3do:hasChildren :Ball-USE-3 ;
  x3do:translation ( 9 0 0 ) .
:Ball-USE-3 a owl:NamedIndividual, x3do:Shape ;
  x3do:hasParent :Transform_2_3_1_4 ;
  owl:sameAs :Ball . # DEF matching this USE
:Transform_2_3_1_5 a owl:NamedIndividual, x3do:Transform ;
  x3do:hasParent :BallRow ;
  x3do:hasChildren :Ball-USE-4 ;
  x3do:translation ( 12 0 0 ) .
:Ball-USE-4 a owl:NamedIndividual, x3do:Shape ;
  x3do:hasParent :Transform_2_3_1_5 ;
  owl:sameAs :Ball . # DEF matching this USE
:Transform_2_3_1_6 a owl:NamedIndividual, x3do:Transform ;
  x3do:hasParent :BallRow ;
  x3do:hasChildren :Ball-USE-5 ;
  x3do:translation ( 15 0 0 ) .
:Ball-USE-5 a owl:NamedIndividual, x3do:Shape ;
  x3do:hasParent :Transform_2_3_1_6 ;
  owl:sameAs :Ball . # DEF matching this USE
:Transform_2_3_2 a owl:NamedIndividual, x3do:Transform ;
  x3do:hasParent :Transform_2_3 ;
  x3do:hasChildren :BallRow-USE-1 ;
  x3do:translation ( 0 3 0 ) .
:BallRow-USE-1 a owl:NamedIndividual, x3do:Group ;
  x3do:hasParent :Transform_2_3_2 ;
  owl:sameAs :BallRow . # DEF matching this USE
:Transform_2_3_3 a owl:NamedIndividual, x3do:Transform ;
  x3do:hasParent :Transform_2_3 ;
  x3do:hasChildren :BallRow-USE-2 ;
  x3do:translation ( 0 6 0 ) .
:BallRow-USE-2 a owl:NamedIndividual, x3do:Group ;
  x3do:hasParent :Transform_2_3_3 ;
  owl:sameAs :BallRow . # DEF matching this USE
:Transform_2_3_4 a owl:NamedIndividual, x3do:Transform ;
  x3do:hasParent :Transform_2_3 ;
  x3do:hasChildren :BallRow-USE-3 ;
  x3do:translation ( 0 9 0 ) .
:BallRow-USE-3 a owl:NamedIndividual, x3do:Group ;
  x3do:hasParent :Transform_2_3_4 ;
  owl:sameAs :BallRow . # DEF matching this USE
:Transform_2_3_5 a owl:NamedIndividual, x3do:Transform ;
  x3do:hasParent :Transform_2_3 ;
  x3do:hasChildren :BallRow-USE-4 ;
  x3do:translation ( 0 12 0 ) .
:BallRow-USE-4 a owl:NamedIndividual, x3do:Group ;
  x3do:hasParent :Transform_2_3_5 ;
  owl:sameAs :BallRow . # DEF matching this USE
:Transform_2_3_6 a owl:NamedIndividual, x3do:Transform ;
  x3do:hasParent :Transform_2_3 ;
  x3do:hasChildren :BallRow-USE-5 ;
  x3do:translation ( 0 15 0 ) .
:BallRow-USE-5 a owl:NamedIndividual, x3do:Group ;
  x3do:hasParent :Transform_2_3_6 ;
  owl:sameAs :BallRow . # DEF matching this USE