About: http://webisa.webdatacommons.org/94420877

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 GRR Rule Variable is identified by a double dollar sign ($$).graphemeA fundamental unit in a written language, for example letters, numbers, punctuation marks..grxmlThe file name extension for XML-format grammar files.
http://www.w3.org/ns/prov#wasQuotedFrom	microsoft.com