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 very large truck with people in back on a city street'. Reverse all words of length '6' in the given sentence.
a very large truck with elpoep in back on a city teerts

Sentence: 'an elderly man in a jacket is walking outside of a window'. Reverse all words of length '3' in the given sentence.
an elderly nam in a jacket is walking outside of a window

Sentence: 'a street light with signs on it near a bridge'. Reverse all words of length '4' in the given sentence.

a street light htiw signs on it raen a bridge