About: http://webisa.webdatacommons.org/116238221

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	It will also be understood that, in addition to 180???, other preferred phase differences are 180???+n???360???, where n is an integer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com