About: http://webisa.webdatacommons.org/45053925

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	So They installed special equipment, such as cameras, as well as trained subway staff who could recognize unusual smells.
http://www.w3.org/ns/prov#wasQuotedFrom	italki.com