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: Then , built by the LNWR , the branch line to Ashbourne was opened in 1899 . 
 Verb: built
answer:
who   built something?


question:
Sentence: As ex-slaves risked beatings for failing to meet the continuing duties , their freedom was limited . 
 Verb: meet
answer:
what might not someone meet?


question:
Sentence: After another 2 or 3 days in the fridge the marinated fillets are ready to eat . 
 Verb: marinated
answer:

what are  marinated?