About: http://webisa.webdatacommons.org/430055714

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	(b) at least one other worker, who is a competent person, equipped with a suitable alarm shall be in constant attendance outside the silo, bin, hopper or other container or structure.
http://www.w3.org/ns/prov#wasQuotedFrom	ontario.ca