About: http://webisa.webdatacommons.org/414564960

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	I think they are knocking on our doorstep.here is a sample, from the German Aerospace Centre, of the types of machines that are knocking at our door.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com