About: http://webisa.webdatacommons.org/321196392

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	If the operator fails to manually perform those tasks, including the rail crossing horn soundings, the system may notify the operator of the task to be performed or the system may implement activation of the task.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com