About: http://webisa.webdatacommons.org/176165065

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	For many years, cavitation has been a problem, particularly in the choice and design of propellers, hydraulic equipment, and other mechanical arts where there is relatively high-speed movement between an article and a fluid.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com