About: http://webisa.webdatacommons.org/180649290

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	Those signals, such as composite sync signal, blanking signal and a series of test signals
http://www.w3.org/ns/prov#wasQuotedFrom	seminarprojects.org