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 Input:
Sentence: Official retirement took place at Fort Knox , on 17 October 1992 . 
 Question: what   took something?

Ex Output:
Official retirement


Ex Input:
Sentence: Debate surrounding a volkstaat returned to the mainstream media following the murder of AWB leader Eugene Terre'Blanche in April 2010 . 
 Question: what does something surround?

Ex Output:
a volkstaat


Ex Input:
Sentence: In addition to comic-book illustration and coloring , Goldberg drew gag cartoons for men 's magazines and did advertising art including a billboard for No-Cal Soda . 
 Question: who   did something?

Ex Output:

Goldberg