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 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: 'several stacks of trunks in front of a building'. Reverse all words of length '8' in the given sentence.

Answer: several stacks of trunks in front of a gnidliub


Question: Sentence: 'two men are playing a wii boxing game'. Reverse all words of length '4' in the given sentence.

Answer:
two men are playing a wii boxing emag