<http://webisa.webdatacommons.org/42438645>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/54774452>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/42438645> .
<http://webisa.webdatacommons.org/42438645>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/42438645>	<http://www.w3.org/ns/prov#value>	"[ N / DF ??? ( s ) ] where N is a number of all the documents and DF(s) is the number of all the documents which contain the word s. 28." .