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.

[EX Q]: Sentence: 'a person in a rowboat under an umbrella'. Reverse all words of length '5' in the given sentence.
[EX A]: a person in a rowboat rednu an umbrella

[EX Q]: Sentence: 'a train is in a depot at the platform entry'. Reverse all words of length '2' in the given sentence.
[EX A]: a train si ni a depot ta the platform entry

[EX Q]: Sentence: 'a group of people on a field playing soccer'. Reverse all words of length '2' in the given sentence.
[EX A]:
a group fo people no a field playing soccer