Assertion: artillery's gun | /r/CapableOf | continue to provide defense
Facets:
value: against helicopters
type: TRANSITIVE-OBJECT
value: against low-flying aircraft
type: TRANSITIVE-OBJECT
Source sentences:
text: With the introduction of guided surface-to-air missiles in the 1950s and ’60s, heavy antiaircraft guns such as this were phased out, though radar-guided automatic guns of 20 to 40 mm continued to provide a defense against low-flying aircraft and helicopters.