The exposition is the very beginning of the story so it should introduce the characters and the setting and maybe introduce a lesson to be learned.
It would be a comprehensive description and explanation of an idea.
1. He is the oldest of all his brothers.
2. My dress is brighter than yours.
3. He is the wisest of all the boys in the class.
4. Ritu is better than Saksshi in Maths.
5. She is senior to me. (Not sure on this one)
6. This lesson is more interesting than the previous one.
7. He is stronger than I imagined.
8. Your handwriting is improving from good to greater with each passing day.
<span>a compilation of dictionaries is callled lexicography</span>