With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: Mark Knowles and Daniel Nestor were the defending champions, but Knowles chose not to participate, and only Nestor competed that year.
text_B: Taddeo and Daniel Nestor were the defending champions, but Knowles chose not to participate, and only Nestor competed that year.
contradiction.