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.

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

Sentence: Swinburne relies on his previous arguments as he defends particular Christian beliefs . 
 Question: what does someone defend?
particular Christian beliefs

Sentence: As ex-slaves risked beatings for failing to meet the continuing duties , their freedom was limited . 
 Question: who might not  meet something?

ex-slaves

