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 large delta airlines airplane on the runway'. Reverse all words of length '6' in the given sentence.
a large delta airlines airplane on the yawnur

Sentence: 'a group of skiers standing at the base of a mountain'. Reverse all words of length '3' in the given sentence.
a group of skiers standing at eht base of a mountain

Sentence: 'a large train at a station full of people'. Reverse all words of length '4' in the given sentence.

a large train at a station lluf of people