About: http://webisa.webdatacommons.org/162369348

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	A Required Field is a field that must be filled in with value before submission of a form.
http://www.w3.org/ns/prov#wasQuotedFrom	html5tutorial.info