In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
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Question: Imago is a group of _ young musicians whose love for music is full of passion.

Answer: four


Question: Some people routinely sleep only _ hours a night but feel fine during the day.

Answer: four


Question: Ospreys use up to _ different calls to communicate with each other.

Answer:
five