In this task, you need to reverse all words of a given length in the sentence. The number of letters in a word determine its length. For example, the length of the word "apple" is 5.
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Question: Sentence: 'a woman checks upon a baby in a bed'. Reverse all words of length '1' in the given sentence.

Answer: a woman checks upon a baby in a bed


Question: Sentence: 'a stop sign next to houses with christmas lights'. Reverse all words of length '4' in the given sentence.

Answer: a pots ngis txen to houses htiw christmas lights


Question: Sentence: 'a very young girl hangs her head backward off the bed'. Reverse all words of length '4' in the given sentence.

Answer:
a yrev young lrig hangs her daeh backward off the bed