Assertion: tank's attack | /r/CapableOf | serve as airhead
Facets:
value: for resupply
type: PURPOSE
value: for reinforcement
type: PURPOSE
value: until the inchon landing
type: TEMPORAL
Source sentences:
text: The Allies fought off the attacks in the Pusan Perimeter which served as an airhead for resupply and reinforcement until the Inchon landing, and the ensuing counterattack against the North.