About: http://webisa.webdatacommons.org/321701294

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	Because the math symbols, such as SQUARE ROOT ???, INTEGRAL ??? and GREEK CAPITAL LETTER SIGMA ??, are not frequently used in common books, the handling of these math symbols is considered to be out of scope for this document.
http://www.w3.org/ns/prov#wasQuotedFrom	w3.org