<http://schema.org/billingPeriod>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#Property> .
<http://schema.org/billingPeriod>	<http://schema.org/rangeIncludes>	<http://schema.org/Duration> .
<http://schema.org/billingPeriod>	<http://www.w3.org/2000/01/rdf-schema#label>	"billingPeriod" .
<http://schema.org/billingPeriod>	<http://www.w3.org/2000/01/rdf-schema#comment>	"The time interval used to compute the invoice." .
<http://schema.org/billingPeriod>	<http://schema.org/domainIncludes>	<http://schema.org/Invoice> .