About: http://webisa.webdatacommons.org/88907624

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 leveled or plumb beam of light can be used to set the level or plumb directions of building elements such as floors, walls and columns.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es