About: http://webisa.webdatacommons.org/412033982

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	While magnetic guidance is not free, it is not expensive (being passive, except at switches) and solves other problems thus far not mentioned like train crossings (for cars and trucks).
http://www.w3.org/ns/prov#wasQuotedFrom	slashdot.org