PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • (a) less expensive to build than roads or rail(b) can be built where roads or rail are problematic (steep vertical ascents/descents)(c) can be partially (or entirely) powered by gravity(d) can be operated during heavy snows and floodsTrains probably have an advantage over a long distance, especially over flat terrain.
http://www.w3.org/ns/prov#wasQuotedFrom
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