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: 'a person in bear feet standing on a skateboard'. Reverse all words of length '4' in the given sentence.

Ex Output:
a person in raeb teef standing on a skateboard


Ex Input:
Sentence: 'a sign and some traffic lights on a street'. Reverse all words of length '3' in the given sentence.

Ex Output:

a sign dna some traffic lights on a street