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 group of people eating a cake on a table'. Reverse all words of length '6' in the given sentence.
answer:
a group of elpoep gnitae a cake on a table


question:
Sentence: 'the double decker bus is headed for its destination'. Reverse all words of length '2' in the given sentence.
answer:
the double decker bus si headed for its destination


question:
Sentence: 'a couple of giraffe standing next to a white fence'. Reverse all words of length '2' in the given sentence.
answer:

a couple fo giraffe standing next ot a white fence