With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: Very recently , US forces in Al - Anbar made a terrible blunder by accidentally killing Abdul - Razaq Inad Al - Gu'ud , Sheikh of the Al - Bu Nimr clan from the powerful Dulaym tribe .
text_B: The killing did not happen
not-entailed.