_:b20577	<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>	<http://www.ontology-of-units-of-measure.org/resource/om-2/lumenPerWatt> .
_:b20577	<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#nil> .