About: http://webisa.webdatacommons.org/262409238

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	Thus,there is a real question as to whether those who choose to answer andthose who do not are the same underlying population.
http://www.w3.org/ns/prov#wasQuotedFrom	mathforum.org