Detailed Instructions: In this task, you are given a sentence and question which can be answered using the sentence. Your task is to answer the question using the information from the sentence. The answer to the question is unique and it is a continuous text span from the sentence.
Problem:Sentence: The psychological impact of this first transformation caused Beast to experience short-term amnesia and also made it difficult for him to control his animalistic instincts , which would cause him to slip into an uncontrollable berserker rage during combat . 
 Question: what did something experience?
Solution:
short-term amnesia and also made it difficult for him to control his animalistic instincts , which would cause him to slip into an uncontrollable berserker rage during combat .