With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: Well we have been working with Ulistic for 1.5 months , and have 100 people following our site on Facebook , and our web site , www.designofashion.com has seen a 3 fold increase in traffic , which is significantly beating our expectations - SEO is a process that takes time and to get results this quickly is exceptional .
text_B: The having happened
entailed.