About: http://webisa.webdatacommons.org/263667070

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	A support beam that is a hollow box; its cross section is a rectangle or square.
http://www.w3.org/ns/prov#wasQuotedFrom	iowadot.gov