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 women who is playing tennis on a tennis court'. Reverse all words of length '7' in the given sentence.

Ex Output:
a women who is gniyalp tennis on a tennis court


Ex Input:
Sentence: 'there is a group of people standing on the beach'. Reverse all words of length '8' in the given sentence.

Ex Output:
there is a group of people gnidnats on the beach


Ex Input:
Sentence: 'a person at a zoo looking over the fence of a giraffe enclosure'. Reverse all words of length '6' in the given sentence.

Ex Output:

a nosrep at a zoo looking over the fence of a giraffe enclosure