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 bear in a field next to a pond'. Reverse all words of length '5' in the given sentence.

Answer: a bear in a dleif next to a pond


Question: Sentence: 'a group of people sitting on a wooden bench'. Reverse all words of length '1' in the given sentence.

Answer: a group of people sitting on a wooden bench


Question: Sentence: 'a large clock is sitting in a field behind a fence'. Reverse all words of length '1' in the given sentence.

Answer:
a large clock is sitting in a field behind a fence