<http://webisa.webdatacommons.org/prov/516166246>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/219953905> .
<http://webisa.webdatacommons.org/219953905>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/219953905>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/219953905>	<http://www.w3.org/ns/prov#value>	"where C is a constant and x is a percentage of the number of presented letters to the number of all letters." .