With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: Novak Djokovic was the defending champion, but lost in the final to Stan Wawrinka, 7–6, 4–6, 5–7, 3–6.
text_B: Novak Djokovic lost in the final to Stan Wawrinka, 7–6, 4–6, 5–7, 3–6.
entailment.