About: http://webisa.webdatacommons.org/197446348

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	Welded structures generally contain defects such as lack of penetration, slag inclusion, porosity, and misalignment.
http://www.w3.org/ns/prov#wasQuotedFrom	hindawi.com