About: http://webisa.webdatacommons.org/89366437

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	Apparently browser vendors made ex units even less consistent between each other than with ems.
http://www.w3.org/ns/prov#wasQuotedFrom	sitepoint.com