@prefix rdf:	<http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix schema:	<http://schema.org/> .
@prefix rdfs:	<http://www.w3.org/2000/01/rdf-schema#> .
schema:Invoice	rdf:type	rdfs:Class ;
	rdfs:subClassOf	schema:Intangible ;
	rdfs:label	"Invoice" ;
	rdfs:comment	"A statement of the money due for goods or services; a bill." .