About: http://webisa.webdatacommons.org/441063211

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	. . . ), x takes on successive values 0, 1, 2, 3 etc. representing the number designation of each ring, and k is a constant.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com