About: http://webisa.webdatacommons.org/187791634

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	Electric field is a vector -- that means that a sum of many electric fields requires vector addition, with arrows.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com