With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: Since September 11 , Pakistan has been repeatedly accused by Afghan and Western leaders of harbouring Taliban extremists who had pledged to disrupt the elections , but at the highest level the US has avoided criticising President Pervaiz Musharraf on the grounds that he is helping the US catch Al Qaeda elements inside Pakistan .
text_B: The harbouring happened
entailed.