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 green apple and knife on dark wooden stairs'. Reverse all words of length '3' in the given sentence.
answer:
a green apple dna knife on dark wooden stairs


question:
Sentence: 'two giraffes are walking through a field of prairie grass'. Reverse all words of length '1' in the given sentence.
answer:
two giraffes are walking through a field of prairie grass


question:
Sentence: 'a young dog is wearing a hat and staring off'. Reverse all words of length '1' in the given sentence.
answer:

a young dog is wearing a hat and staring off