About: http://webisa.webdatacommons.org/416015251

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Many large organizations including businesses and government agencies offer toll-free (e.g., 800 number) telephone calling services for the convenience of their customers or constituents.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com