About: http://webisa.webdatacommons.org/9807510

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	To take your last point first, I should imagine David Cameron instructed a speechwriter in general terms what he wanted to say, and then tweaked a draft into a form of words which he felt he could use.
http://www.w3.org/ns/prov#wasQuotedFrom	layanglicana.org