About: http://webisa.webdatacommons.org/274453899

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	Great difficulties were experienced during these processes, especially with the rolling mills, as the rollers tended to deteriorate and produce strips of metal with uneven thickness.
http://www.w3.org/ns/prov#wasQuotedFrom	pcgs.com