instruction:
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.
question:
Sentence: 'a small bird sitting on the rim of a fountain'. Reverse all words of length '7' in the given sentence.
answer:
a small bird gnittis on the rim of a fountain


question:
Sentence: 'woman holding an umbrella and a small cat'. Reverse all words of length '7' in the given sentence.
answer:
woman gnidloh an umbrella and a small cat


question:
Sentence: 'a motorcycle police man chatting with a little boy'. Reverse all words of length '4' in the given sentence.
answer:

a motorcycle police man chatting htiw a little boy