With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: The DJIA had its worst fall since 1987 , a drop of 9 % or 998.50 points , before going back up a bit to close with a loss of 3.30 % or 347.80 points to a level of 10,520 .
text_B: The having happened
entailed.