About: http://webisa.webdatacommons.org/216609566

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 edge 15 also has a point 17 which is aligned with the center 18 of the concave arcuate surface 16 for use in marking the ball, such as in FIG. 2, by inserting the point 17 into the earth and which can also be used as a pointer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com