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.

[EX Q]: 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: who   experienced something?
[EX A]: Beast ### him

[EX Q]: Sentence: This technology is implemented in the lens itself , or by moving the sensor as the final element in the optical path . 
 Question: what is  implemented?
[EX A]: This technology

[EX Q]: Sentence: Instead , much of numerical analysis is concerned with obtaining approximate solutions while maintaining reasonable bounds on errors . 
 Question: what might something maintain?
[EX A]:
reasonable bounds on errors