With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: Plucknett qualified for the 1980 U.S. Olympic team but was unable to compete due to the 1980 Summer Olympics boycott.
text_B: Plucknett qualified for the 1981 U.S. Olympic team but was unable to compete due to the 1980 Summer Olympics boycott.
contradiction.