With no explanation, label text_A→text_B with either "entailment" or "not-entailment".
text_A: Sarah was in the first grade when she began to dislike boys. During that year she was held face down in the snow by a boy bully. Through the Year's following she was teased a lot by boys. She began to think all boys were rude and mean. "Not anymore, because now she teaches her son how not to be a rude boy."
text_B: Sarah gave birth to a son. starts after she teaches her son not to be a rude boy.
not-entailment.