PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A worker was currently insured for survivors benefits if he had at least 6 quarters of coverage out of the 12 calendar quarters immediately preceding his death (changed in 1946 to 6 out of 13 quarters, including the quarter of his death); and
http://www.w3.org/ns/prov#wasQuotedFrom
  • ssa.gov