About: http://webisa.webdatacommons.org/138332388

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	This looks like a testable question, so for a quick look I used SPY daily closes (yes, with dividends, including effects of deletions, additions, etc) since 1993 in the following scheme:
http://www.w3.org/ns/prov#wasQuotedFrom	dailyspeculations.com