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: 'someone is sitting on a elephant and messing with the seat'. Reverse all words of length '7' in the given sentence.
answer:
enoemos is gnittis on a elephant and gnissem with the seat


question:
Sentence: 'a group of people wearing skis and standing at the top of a ski slope'. Reverse all words of length '7' in the given sentence.
answer:
a group of people gniraew skis and standing at the top of a ski slope


question:
Sentence: 'a motircycle parked on a side walk near a building'. Reverse all words of length '10' in the given sentence.
answer:

a elcycritom parked on a side walk near a building