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 kids playing soccer with a ball while a referee watches closely'. Reverse all words of length '4' in the given sentence.

Ex Output:
two sdik playing soccer htiw a llab while a referee watches closely


Ex Input:
Sentence: 'many people flying kites in front of the white house in washington dc'. Reverse all words of length '4' in the given sentence.

Ex Output:
ynam people flying kites in front of the white house in washington dc


Ex Input:
Sentence: 'a horse stands in front of a big building'. Reverse all words of length '3' in the given sentence.

Ex Output:

a horse stands in front of a gib building