human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Airing date, Number of episodes, HD format, Highest average point ratings, Genre, Official website
###Question: What are the number of episodes when the genre is modern drama and the highest average ratings points are 28?
gpt
SELECT AVG Number of episodes FROM table WHERE Genre = modern drama AND Highest average point ratings = 28