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 cat is playing with the bottom part of the umbrella'. Reverse all words of length '3' in the given sentence.

Answer: a tac is playing with eht bottom part of eht umbrella


Question: Sentence: 'he is a serious baseball player and is ready for the pitch'. Reverse all words of length '5' in the given sentence.

Answer: he is a serious baseball player and is ydaer for the hctip


Question: Sentence: 'a bus is seen coming up to a bus stop'. Reverse all words of length '6' in the given sentence.

Answer:
a bus is seen gnimoc up to a bus stop