About: http://webisa.webdatacommons.org/58893425

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	You could try ZenDay, which meets all your requirements, except the % measurement.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com