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: 'black and silver fire hydrant sitting next to a road'. Reverse all words of length '7' in the given sentence.
black and silver fire tnardyh gnittis next to a road

Sentence: 'a photo in an airport showing a backpack and a cell phone'. Reverse all words of length '8' in the given sentence.
a photo in an airport showing a kcapkcab and a cell phone

Sentence: 'the baseball players are changing field positions'. Reverse all words of length '3' in the given sentence.

eht baseball players era changing field positions