<http://webisa.webdatacommons.org/291380771>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/246250904>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/291380771> .
<http://webisa.webdatacommons.org/291380771>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<patents.com> .
<http://webisa.webdatacommons.org/291380771>	<http://www.w3.org/ns/prov#value>	"sets T1, . . . , Tn where each of these sets is a tree." .