TASK DEFINITION: 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: 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  be run  on something?

SOLUTION: free software for the UNIX environment

PROBLEM: 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: who   finished something?

SOLUTION: Keats

PROBLEM: Sentence: A type modifier is used to make a pointer or reference . 
 Question: what   makes something?

SOLUTION:
A type modifier

