With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: In 1956 was elected vice chairman of United Aircraft, retiring in 1958 but remaining on the company's board of directors until 1968.
text_B: In 1956 was elected vice chairman of United Aircraft, retiring in 1959 but remaining on the company's board of directors until 1968.
contradiction.