About: http://webisa.webdatacommons.org/234165836

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	Wood is the most difficult but metal is terribly hard, at least from my point of view, to add or subtract.
http://www.w3.org/ns/prov#wasQuotedFrom	si.edu