With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: Various doctors , both foreign and American , are associated with Al Qaeda leaders or operatives , to include the doctors Abdul Qadoos Khan , a bacteriologist from Rawalpindi and Aafia Siddiqui , PhD , from Karachi .
text_B: The associating happened
entailed.