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: 'two people on a motorcycle ride towards the road'. Reverse all words of length '6' in the given sentence.
two elpoep on a motorcycle ride towards the road

Sentence: 'a man walking a brown horse down a race track'. Reverse all words of length '4' in the given sentence.
a man walking a brown horse nwod a ecar track

Sentence: 'an underground train station waiting at the station'. Reverse all words of length '3' in the given sentence.

an underground train station waiting at eht station