About: http://webisa.webdatacommons.org/48204208

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	FIGS. 5 and 6 illustrate the fifth and sixth embodiments of the invention respectively, which are similar to the fourth embodiment, except for the method in which the frictional engagement with the earth is increased.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com