With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: Reports from the Hurricane Katrina disaster zone Sunday say the American singer and musician Clarence `` Gatemouth `` Brown has died at the age of 81 , shortly after he was forced to leave his home just outside New Orleans .
text_B: Hurricane Katrina is a natural entity
not-entailed.