With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: According to the controversial `` Feith memo , `` which summarized purported intelligence showing an Iraqi / Al Qaeda connection , Osama Bin Laden had asked Iraqi intelligence for technical assistance in sending letter bombs a half year before the Al Hayat letters were sent .
text_B: The sending did not happen
not-entailed.