About: http://webisa.webdatacommons.org/368720042

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	Structural requirements demand that the column is often made of stainless steel or steel, however the steps and railings can be made of nearly any material, including wood, steel, glass and stone.
http://www.w3.org/ns/prov#wasQuotedFrom	eestairs.com