With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: The Tahirids enjoyed a high degree of autonomy in their governance of Khorasan, but they remained subject to the Abbasid caliphate and were not independent rulers.
text_B: they remained subject to the Abbasid caliphate and were not independent rulers.
entailment.