About: http://webisa.webdatacommons.org/454033588

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	In consequence, their use was limited principally to those built on the Parrott principle, and the great mass of the heavy artillery used by the Union armies was of the smooth-bore type.
http://www.w3.org/ns/prov#wasQuotedFrom	civilwarhome.com