With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: Sara Errani and Roberta Vinci were the defending champions, but lost in the final to Ekaterina Makarova and Elena Vesnina 5–7, 2–6.
text_B: Sara Errani and Roberta Vinci lost in the final to Ekaterina Makarova and Elena Vesnina 5–7, 2–6.
entailment.