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 Input:
Sentence: 'a group of people para sailing on a beach'. Reverse all words of length '5' in the given sentence.

Ex Output:
a puorg of people para sailing on a hcaeb


Ex Input:
Sentence: 'a street performer copying a woman on her phone'. Reverse all words of length '7' in the given sentence.

Ex Output:
a street performer gniypoc a woman on her phone


Ex Input:
Sentence: 'a cat is resting on a mans lap'. Reverse all words of length '3' in the given sentence.

Ex Output:

a tac is resting on a mans pal