Definition: 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.
Input: Sentence: 'the two buses are picking up people to bring to their destination'. Reverse all words of length '5' in the given sentence.

the two sesub are picking up people to gnirb to rieht destination