About: http://webisa.webdatacommons.org/9574183

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	In other words, ??1=0 degrees and ??2=90 degrees is a condition where the signal output from ??2 lags 90 the signal output from ??1 by 90 degrees.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com