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: 'a man on skis is under an empty ski lift'. Reverse all words of length '1' in the given sentence.
a man on skis is under an empty ski lift

Sentence: 'a double sink with a mirror and a venetian door'. Reverse all words of length '3' in the given sentence.
a double sink with a mirror dna a venetian door

Sentence: 'a dog sitting on a couch looking intently at something'. Reverse all words of length '3' in the given sentence.

a god sitting on a couch looking intently at something