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 woman walks a horse wearing a blanket'. Reverse all words of length '7' in the given sentence.

Ex Output:
a woman walks a horse gniraew a teknalb


Ex Input:
Sentence: 'a street next to two road blocks and a blurry object'. Reverse all words of length '3' in the given sentence.

Ex Output:
a street next to owt road blocks dna a blurry object


Ex Input:
Sentence: 'a couple of children sitting underneath a blue umbrella'. Reverse all words of length '7' in the given sentence.

Ex Output:

a couple of children gnittis underneath a blue umbrella