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 skier is flying through the air while people watch'. Reverse all words of length '7' in the given sentence.
answer:
a skier is flying hguorht the air while people watch


question:
Sentence: 'yachts are all tied up in a marina dock'. Reverse all words of length '3' in the given sentence.
answer:
yachts era lla tied up in a marina dock


question:
Sentence: 'three small baby black bears are close together'. Reverse all words of length '4' in the given sentence.
answer:

three small ybab black bears are close together