About: http://webisa.webdatacommons.org/420081015

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	In addition, the insertion mark M1 may also be shown as, e.g. an arrow, and is not limited as long as the insertion direction of the tape T can be indicated.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com