About: http://webisa.webdatacommons.org/112421808

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	So what you will need to do standardize on a single Main Line number, say +14165551212 and then assign that number to all your users including an extension.
http://www.w3.org/ns/prov#wasQuotedFrom	ucguys.com