About: http://webisa.webdatacommons.org/190484591

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	To the pioneers of deaf education, sign language was a natural language, perhaps the first means of communication among humans.
http://www.w3.org/ns/prov#wasQuotedFrom	h-net.org