With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: I phoned this company for advice on our office refurb and although we did not use them in the end ( as our building contractor carried out the electrical work ) , they provided me with plenty of useful information over an hour phone call and subsequently we are now using PJC as our electrical maintenance contractor .
text_B: The phoning happened
entailed.