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: 'the couple are smiling at each other as they sit on a bench'. Reverse all words of length '4' in the given sentence.

Answer: the couple are smiling at hcae other as yeht sit on a bench


Question: Sentence: 'a silver bmw motorcycle being posed for a picture'. Reverse all words of length '1' in the given sentence.

Answer: a silver bmw motorcycle being posed for a picture


Question: Sentence: 'a person riding a surf board on a body of water'. Reverse all words of length '1' in the given sentence.

Answer:
a person riding a surf board on a body of water