About: http://webisa.webdatacommons.org/90469915

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	Graphic elements such as coils, contacts, and blocks represent instructions.The following is an example of a Ladder diagram.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com