About: http://webisa.webdatacommons.org/417167308

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	As time passed and experience was gained, there was an increasing preference for contributory systems and more concern shown for actuarial soundness.
http://www.w3.org/ns/prov#wasQuotedFrom	ssa.gov