Assertion: tracer | /r/HasProperty | common
Facets:
value: without betraying their own location
type: MANNER
value: on most wwii aircraft
type: LOCATION
value: very
type: DEGREE
value: with the exception of night fighters
type: OTHER
Source sentences:
text: Tracers were very common on most WWII aircraft, with the exception of night fighters, which needed to be able to attack and shoot down the enemy before they realized they were under attack, and without betraying their own location to the enemy defensive gunners.