About: http://webisa.webdatacommons.org/228811208

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	It comes down to those 4,000 people in 7) above - their health, travel costs, schedule conflicts, and other factors, I think.
http://www.w3.org/ns/prov#wasQuotedFrom	geneamusings.com