About: http://webisa.webdatacommons.org/36598297

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	With the guard missing, items such as pencils or tools can fall in, prompting a worker to try to quickly reach in to retrieve it.
http://www.w3.org/ns/prov#wasQuotedFrom	masonrymagazine.com