About: http://webisa.webdatacommons.org/30786557

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	However, control of the output condition, such as the speed, torque, or power, of induction motors in the manner necessary for such applications is difficult and has substantially limited their usage.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com