About: http://webisa.webdatacommons.org/150805552

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	Imaginary numbers can be very useful in computations, but an observable will always be real, which is sort of the point of calling them real numbers.
http://www.w3.org/ns/prov#wasQuotedFrom	arstechnica.com