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: 'two giraffes are walking through a field of prairie grass'. Reverse all words of length '1' in the given sentence.

Ex Output:
two giraffes are walking through a field of prairie grass


Ex Input:
Sentence: 'people watching a music concert being performed on a stage'. Reverse all words of length '5' in the given sentence.

Ex Output:
people watching a cisum concert gnieb performed on a egats


Ex Input:
Sentence: 'a cat is standing on a book shelf next too books'. Reverse all words of length '4' in the given sentence.

Ex Output:

a cat is standing on a koob shelf txen too books