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 man on skis is under an empty ski lift'. Reverse all words of length '1' in the given sentence.
answer:
a man on skis is under an empty ski lift


question:
Sentence: 'a couple of elephants that are in some water'. Reverse all words of length '6' in the given sentence.
answer:
a elpuoc of elephants that are in some water


question:
Sentence: 'a boy in a baseball hat stands in a dirt area with his baseball glove on'. Reverse all words of length '4' in the given sentence.
answer:

a boy in a baseball hat stands in a trid aera htiw his baseball glove on