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.

Example Input: Sentence: In addition to commercial applications , there is a wide body of free software for the UNIX environment which can be compiled and run on SUPER-UX , such as Emacs , and Vim . 
 Question: what can something be run  on?
Example Output: SUPER-UX , such as Emacs , and Vim

Example Input: Sentence: Having finished his apprenticeship with Hammond , Keats registered as a medical student at Guy 's Hospital and began studying there in October 1815 . 
 Question: what did someone register  as?
Example Output: a medical student

Example Input: Sentence: As Secretary of the Interior , Chandler eradicated serious corruption in the Bureau of Indian Affairs , fully endorsing President Grant 's Peace Policy initiative to civilize American Indian tribes . 
 Question: who might  be civilized  by doing something?
Example Output:
American Indian tribes