With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: Although in his letters Mahler almost always referred to the work as a symphony, the first two performances described it as a symphonic poem or tone poem.
text_B: Although in his letters Mahler almost always referred to the work as a symphony, the first two performances described it as a symphonic tone poem.
entailment.