With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: Someone who called himself Abu Hafs from the Ibn Al - Khattab Brigades ( another new group ) was on Al - Jazeera describing the enormous casualties among the Marines and he sweared that American soldiers were mutilating the bodies of dead insurgents .
text_B: The calling did not happen
not-entailed.