With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: Petr Luxa and Radek Štěpánek were the defending champions but only Štěpánek competed that year with Martin Damm.
text_B: Petr Luxa and Yahya ibn Zayd were the defending champions but only Štěpánek competed that year with Martin Damm.
contradiction.