About: http://webisa.webdatacommons.org/447089929

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	Modulation types include amplitude modulation, frequency modulation, pulse-position modulation (PPM), and pulse code modulation (PCM).
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca