Definition: You are given a sentence and a question in the input. If the information provided in the sentence is enough to answer the question, label "Yes", otherwise label "No". Do not use any facts other than those provided in the sentence while labeling "Yes" or "No". There are only two types of valid responses: Yes and No.
Input: Sentence: During this era, following the genocide of Shakyas in Lumbini by Virudhaka, the survivors migrated north and entered the forest monastery in Sankhu masquerading as Koliyas. 
Question: Who did the migrating Shakyas pretend to be?

Yes.