About: http://webisa.webdatacommons.org/397079750

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	The (x,y) representation works for vectors, which are similar to complex numbers; however you are missing the whole ???imaginary??? thing.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com