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.

Example Input: Sentence: 'there are several different items of food on this fancy plate'. Reverse all words of length '2' in the given sentence.
Example Output: there are several different items fo food no this fancy plate

Example Input: Sentence: 'a train is in a depot at the platform entry'. Reverse all words of length '2' in the given sentence.
Example Output: a train si ni a depot ta the platform entry

Example Input: Sentence: 'an airplane is on a runway near the grass'. Reverse all words of length '8' in the given sentence.
Example Output:
an enalpria is on a runway near the grass