instruction:
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.
question:
Sentence: 'a crowd of people skiing and enjoying the snow'. Reverse all words of length '4' in the given sentence.
answer:
a crowd of people skiing and enjoying the wons


question:
Sentence: 'a man leaning forward as he swings a tennis racket'. Reverse all words of length '2' in the given sentence.
answer:
a man leaning forward sa eh swings a tennis racket


question:
Sentence: 'a train traveling th rough a train station next to railroad tracks'. Reverse all words of length '8' in the given sentence.
answer:

a train traveling th rough a train station next to daorliar tracks