About: http://webisa.webdatacommons.org/335408133

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	As shown in FIG. 2, a programmable logic controller 90, often used in process control applications, is a system which has a user-programmable memory for storage of instructions to perform specific functions.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com