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 young boy plays with a phone sitting on the ground'. Reverse all words of length '6' in the given sentence.
answer:
a young boy plays with a phone sitting on the dnuorg


question:
Sentence: 'a cat stinking its tongue out beside food'. Reverse all words of length '1' in the given sentence.
answer:
a cat stinking its tongue out beside food


question:
Sentence: 'a child wearing a backpack is walking behind a woman using her cell phone'. Reverse all words of length '8' in the given sentence.
answer:

a child wearing a kcapkcab is walking behind a woman using her cell phone