What are the titles of the top 3 episodes that received no less than 30 votes in its 10-star rating?
no less than 30 votes refers to votes > = 30; 10-star rating refers to stars = 10
SELECT T2.title FROM Vote AS T1 INNER JOIN Episode AS T2 ON T2.episode_id = T1.episode_id WHERE T1.votes >= 30 AND T1.stars = 10 ORDER BY T1.votes DESC LIMIT 3