table: 1-11178271-1
columns: #, Episode, Air Date, Rating, Share, 18–49 (Rating/Share), Viewers (m), Weekly Rank
Q: What is the episode where 18-49 has a rating/share of 3.5/9
A: SELECT Episode FROM 1-11178271-1 WHERE 18–49 (Rating/Share) = '3.5/9'