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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	In programming languages such as C or Python, use the atan2(y, x) function to get the right value.The Designer???s Guide Community 15 of 28www.designers-guide.org 16.
http://www.w3.org/ns/prov#wasQuotedFrom	slideshare.net