About: http://webisa.webdatacommons.org/67035937

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	First, device R asks the signal transmitting device T to alternate its signal display between black and white within a certain period of time, for example 5 seconds (step 1001).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com