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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	Signals & Systems A signal is a varying phenomenon that can be measured. http://webstaff.kmutt.ac.th/~sarawan.won/INC212/OH_DTSignalsSys10.pdf
http://www.w3.org/ns/prov#wasQuotedFrom	booksreadr.org