Given the task definition and input, reply with output. In this task, you are given a premise sentence in Persian and a label in English. Label determines whether a hypothesis sentence entails, contradicts, or is neutral with respect to the given premise sentence. You have to generate the hypothesis sentence based on the label and the premise sentence. Your sentence should be fluent and grammatically correct. Even though there exist multiple answers, we only need a single answer.

Premise: این واحه امروزه ۳۲۱۰ کیلومتر مربع وسعت دارد اما به احتمال زیاد در روزگارهای کهن و پیش از بیابان‌زایی‌ها که در این منطقه از سده سوم میلادی آغاز شده وسعت بسیار بیشتری داشته‌است. <sep> Label: Entailment

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
بیابان زدایی باعث کوچکتر شدن این واحه در طی مدت زمانی طولانی شده است.