About: http://webisa.webdatacommons.org/193837485

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	assuming that p ensures first/last are there but middle can be null, or maybe you do checks that throw different types of exceptions, or who knows what.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com