With no explanation, label text_A→text_B with either "entailment" or "not-entailment".
text_A: Nancy was a cigarette smoker. Her best friend smoked as well. "As they got older, Nancy's friend got cancer." Nancy became alarmed and treated it as a wake up call. Nancy quit smoking after her friend died.
text_B: Nancy was sad. starts before Nancy be a cigarette smoker
not-entailment.