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 Q]: Sentence: 'four cute little ducklings swimming in the water'. Reverse all words of length '6' in the given sentence.
[EX A]: four cute elttil ducklings swimming in the water

[EX Q]: Sentence: 'a couple of beds pushed together inside of a hospital'. Reverse all words of length '6' in the given sentence.
[EX A]: a elpuoc of beds dehsup together edisni of a hospital

[EX Q]: Sentence: 'a man skiing down the side of a snow covered ski slope'. Reverse all words of length '4' in the given sentence.
[EX A]:
a man skiing nwod the edis of a wons covered ski slope