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.

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

Sentence: 'a cat with a santa hat standing on a rug'. Reverse all words of length '8' in the given sentence.
a cat with a santa hat gnidnats on a rug

Sentence: 'a group of zebra standing eating some hay'. Reverse all words of length '4' in the given sentence.

a group of zebra standing eating emos hay