About: http://webisa.webdatacommons.org/435460141

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	If you encounter a proportion that has one of its means or extremes left blank, or uses another symbol such as a question
http://www.w3.org/ns/prov#wasQuotedFrom	algebrahelp.com