About: http://webisa.webdatacommons.org/438367111

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	Any drafting aids, such as rulers or curves, have to be arranged to adhere to the surface as they cannot be held by the other hand.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es