<http://webisa.webdatacommons.org/65416384>	<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://webisa.webdatacommons.org/65416384>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/347638640>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/65416384> .
<http://webisa.webdatacommons.org/65416384>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<usingenglish.com> .