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 street filled with traffic and a very long bus'. Reverse all words of length '4' in the given sentence.
[EX A]: a street filled htiw traffic and a yrev gnol bus

[EX Q]: Sentence: 'a man walking in the shore with a surfboard under his arm'. Reverse all words of length '3' in the given sentence.
[EX A]: a nam walking in eht shore with a surfboard under sih mra

[EX Q]: Sentence: 'young men balance on a sinking surfboard in a calm lake'. Reverse all words of length '2' in the given sentence.
[EX A]:
young men balance no a sinking surfboard ni a calm lake