About: http://webisa.webdatacommons.org/41436927

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 another embodiment the tubes cross section comprises one or more planes forming a shape such as a triangle, square, rectangle, pentagon, hexagon, heptagon, octagon, nonagon, decagon, or other polygon.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr