About: http://webisa.webdatacommons.org/209647382

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 worker nearby is the first to witness the situation and immediately presses an emergency button in its cellular phone, radio or other communication device.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com