With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: He joined Corrosion of Conformity in 1989, but did not become the lead singer until the recording of "Deliverance" in 1994.
text_B: He joined Corrosion of Conformity in 1980, but did not become the lead singer until the recording of "Deliverance" in 1994.
contradiction.