instruction:
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.
question:
Sentence: As ex-slaves risked beatings for failing to meet the continuing duties , their freedom was limited . 
 Verb: failing
answer:
what might someone fail  to do?


question:
Sentence: The north tower was quickly rebuilt as a stubby , flat-roofed structure . 
 Verb: rebuilt
answer:
what was  rebuilt?


question:
Sentence: Boshoff claimed a symbolism of the murder for farm murders that he described as `` nothing other than a state of war '' . 
 Verb: described
answer:

who   described something?