With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: The man is believed to have been one of several senior al-Qaida members targeted in a U.S. bombing attack in January , in the town of Damadola , that killed at least 18 civilians and several al-Qaida operatives .
text_B: Al-Qaida is a time or duration of time
not-entailed.