About: http://webisa.webdatacommons.org/155377812

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 two different square roots" issue applies to real numbers as well; it is just that in that case there is a consensus on which one is the principal square root.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com