With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: A single prototype and five pre - production aircraft were built, and the program was cancelled in favor of the Petlyakov Pe-2.
text_B: A single prototype and five pre-production aircraft were built, but two crashed and the program was cancelled in favor of the Petlyakov Pe-2.
neutral.