With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: Founded as an affiliate of the Socialist Party of America, the party split with the SPA in 1936 and joined the Social Democratic Federation.
text_B: Founded as an affiliate of the Socialist Party of America, the party split with the SPA in 1937 and joined the Social Democratic Federation.
contradiction.