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 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: 'teenagers riding skateboards in a concrete skate park'. Reverse all words of length '1' in the given sentence.
answer:
teenagers riding skateboards in a concrete skate park


question:
Sentence: 'a giraffe with the head down eating grass'. Reverse all words of length '4' in the given sentence.
answer:

a giraffe htiw the daeh nwod eating grass