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 hand reaching out towards a standing giraffe'. Reverse all words of length '7' in the given sentence.
a hand reaching out sdrawot a standing effarig

Sentence: 'a dog that is in a living room near a group of people'. Reverse all words of length '5' in the given sentence.
a dog that is in a living room near a puorg of people

Sentence: 'four drunk people holding up their glasses smiling'. Reverse all words of length '7' in the given sentence.

four drunk people gnidloh up their sessalg gnilims