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: when might something obtain something?
while maintaining reasonable bounds on errors

Sentence: The means to lay their foundation being the outcome of special prayers addressed to the Mother of God during the nine days preceding event of 8 Dec. , 1854 . 
 Question: what is  being preceded?
event of 8 Dec. , 1854 .

Sentence: In 1638 he defended John Hampden , along with co-counsel Robert Holborne , on his refusal to pay Ship Money , on which occasion he made a notable speech which established him as a leading advocate . 
 Question: who did someone defend?

John Hampden