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.

[Q]: Sentence: The distinction between Primary and Secondary groups serves to identify between two orders of social organisation through analysis of the group relationships and their nature . 
 Question: what does something serve  to do?
[A]: identify between two orders of social organisation through analysis of the group relationships and their nature


[Q]: Sentence: While Ballard recuperates in the hospital , the released spirits , unharmed from the nuclear explosion , attack the city . 
 Question: who were  released?
[A]: spirits


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


