About: http://webisa.webdatacommons.org/394275845

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, as shown by the hatching in FIG. 7, elongated base 19 can be partially filled with some type of material, such as dirt, sand, gravel, cement or concrete, in order to increase the strength of the elongated base.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca