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: 'many vegetables are on the green kitchen counter'. Reverse all words of length '7' in the given sentence.
[EX A]: many vegetables are on the green nehctik retnuoc

[EX Q]: Sentence: 'one person watches while the other flies a kite'. Reverse all words of length '7' in the given sentence.
[EX A]: one person sehctaw while the other flies a kite

[EX Q]: Sentence: 'a very big pretty horse grazing in the grass'. Reverse all words of length '4' in the given sentence.
[EX A]:
a yrev big pretty horse grazing in the grass