About: http://webisa.webdatacommons.org/410097398

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	In the 1950's to the 1970's, the field was mainly social and concerned with issues such as nursing homes and health care.
http://www.w3.org/ns/prov#wasQuotedFrom	wikidoc.org