About: http://webisa.webdatacommons.org/55690178

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	Spikes 33, are not effective, or practical, on normal walking surfaces, such as wooden floors, carpets, concrete, or asphalt, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com