About: http://webisa.webdatacommons.org/426587721

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	The problem comes down to finding a simple pendulum, i.e. a weight hung on a string, of such a length that it makes oscillations of the same time as those aforesaid suspended figures.
http://www.w3.org/ns/prov#wasQuotedFrom	thearma.org