About: http://webisa.webdatacommons.org/207946901

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	6.) Ruler: Ruler or more commonly known as Scale is a geometrical equipment used for measuring lengths and drawing straight lines was also first invented by Indians in about 1500 BC.
http://www.w3.org/ns/prov#wasQuotedFrom	indiaexam.in