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: 'a train that is stationary at the station waiting for passengers'. Reverse all words of length '10' in the given sentence.
Output:
a train that is yranoitats at the station waiting for sregnessap