About: http://webisa.webdatacommons.org/65416384

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	They are urgently needed for improving human-machine interaction since the main obstacle in the interaction beween human and computer is a communication problem.
http://www.w3.org/ns/prov#wasQuotedFrom	usingenglish.com