About: http://webisa.webdatacommons.org/93891082

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	One person is a caller, one tries to solve the problem on the calculator,
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com