About: http://webisa.webdatacommons.org/85166626

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	But these slate quarries and the machinery in them were worked mostly by water power and gravity.
http://www.w3.org/ns/prov#wasQuotedFrom	becausetheyrethere.com