About: http://webisa.webdatacommons.org/42388652

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 travel trailers became increasingly popular in the 1940s and 1950s for recreational outdoor activities such as camping, producers introduced more spacious models that could be lived in comfortably for longer periods.
http://www.w3.org/ns/prov#wasQuotedFrom	senate.gov