About: http://webisa.webdatacommons.org/327705072

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	Pairs of weights 55, 55' are attached, for example by bolting, to the front and back of resonant beams 54, 54' at the lower end to increase the momentum thereof.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com