With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Airplanes were implicated in the September 11 attacks .
text_B: A third plane , American Airlines Flight 77 , was crashed into the Pentagon -LRB- the headquarters of the United States Department of Defense -RRB- in Arlington County , Virginia , leading to a partial collapse of the building 's western side .
SUPPORTS.