With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: He played professionally for a number of clubs, but the peak of his career was spent with Birmingham City during their most successful period in the 1950s.
text_B: He played professionally for a number of clubs, but the peak of his career was spent with Birmingham City during their most successful period in the 19501.
contradiction.