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 crowd of people skiing and enjoying the snow'. Reverse all words of length '4' in the given sentence.

Ex Output:
a crowd of people skiing and enjoying the wons


Ex Input:
Sentence: 'a man walking a brown horse down a race track'. Reverse all words of length '4' in the given sentence.

Ex Output:
a man walking a brown horse nwod a ecar track


Ex Input:
Sentence: 'a cross country skier wearing red and white attire skiing near pine trees'. Reverse all words of length '7' in the given sentence.

Ex Output:

a cross yrtnuoc skier gniraew red and white attire skiing near pine trees