_:b17748	<http://www.w3.org/2002/07/owl#unionOf>	_:b16265 .
_:b16265	<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>	<http://w3id.org/glosis/model/layerhorizon/GL_Layer> .
_:b16265	<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>	_:b17314 .
_:b17314	<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#nil> .
_:b17314	<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>	<http://w3id.org/glosis/model/layerhorizon/GL_Horizon> .