Detailed Instructions: 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.
Problem:Sentence: 'three cows laying near one another in a field with trees in the background'. Reverse all words of length '1' in the given sentence.
Solution:
three cows laying near one another in a field with trees in the background