In this task, you are given a sentence and a verb from the sentence. Your task is to generate a set of wh-questions starting with who, what, when, where, why, how, how much. The generated questions must contain the verb and the answers to these questions are phrases in the input sentence. The answer to the questions is associated with a specific semantic role. The answer to these questions is associated with a specific semantic role. The questions must use pronouns instead of direct nouns that could be used to refer to various roles present in the sentence. Construct a question in such a way that (i) it is unambiguous, (ii) its answer is unique (iii) its answer is a continuous text span from the paragraph.

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


[Q]: Sentence: He is known for his work playing the Native American flute , and has been a successful Indian dancer , and has sung in a popular blues band . 
 Verb: sung
[A]: who has  sung  in something?


[Q]: Sentence: The Packers had not lost at Lambeau Field in December since the 1993 season , and the 5-7 Panthers desperately needed a win to keep their playoff hopes alive . 
 Verb: win
[A]:
who must  win?