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.

Q: Sentence: 'a hand reaching out towards a standing giraffe'. Reverse all words of length '7' in the given sentence.

A: a hand reaching out sdrawot a standing effarig
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Q: Sentence: 'a small bird sitting on the rim of a fountain'. Reverse all words of length '7' in the given sentence.

A: a small bird gnittis on the rim of a fountain
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Q: Sentence: 'a little girl sitting in front of a piece of cake'. Reverse all words of length '1' in the given sentence.

A:
a little girl sitting in front of a piece of cake
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