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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	BlueWolf11th Jun 2008, 22:02In the depths of my memory is a tale about an inquisitive French chap (at least I think he was French) who dug a couple of wells some distance apart and dangled weights down them.
http://www.w3.org/ns/prov#wasQuotedFrom	pprune.org