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 man walking a brown horse down a race track'. Reverse all words of length '4' in the given sentence.

Answer: a man walking a brown horse nwod a ecar track


Question: Sentence: 'a large bird stands on the ledge of a window'. Reverse all words of length '3' in the given sentence.

Answer: a large bird stands on eht ledge of a window


Question: Sentence: 'an elevated train passes over a city street'. Reverse all words of length '5' in the given sentence.

Answer:
an elevated niart passes over a city street