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 baby elephant in the middle of a field'. Reverse all words of length '3' in the given sentence.
a baby elephant in eht middle of a field

Sentence: 'several stacks of trunks in front of a building'. Reverse all words of length '8' in the given sentence.
several stacks of trunks in front of a gnidliub

Sentence: 'a window with the curtain drawn facing a brick building'. Reverse all words of length '1' in the given sentence.

a window with the curtain drawn facing a brick building