Assertion: military helicopter | /r/CapableOf | fire rocket
Facets:
value: at a group of parked vehicles
type: LOCATION
value: mistakenly
type: MANNER
Source sentences:
text: A military helicopter on a rural training exercise in western Russia mistakenly fired rockets at a group of parked vehicles, knocking at least one person to the ground, footage posted by Russian news sites and on social media showed.