About: http://webisa.webdatacommons.org/155393157

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	They are punch presses which come down with several tons of pressure on pieces of brass and form them into parts such as braces that hold the instruments together.
http://www.w3.org/ns/prov#wasQuotedFrom	zacharymusic.com