table: 1-11354111-3
columns: #, Episode, Air Date, Rating, Share, Rating/Share 18–49, Viewers (m), Timeslot Rank, Night Rank, Overall Rank
Q: what's the overall rank with rating/share 18–49 of 2.1/5
A: SELECT COUNT Overall Rank FROM 1-11354111-3 WHERE Rating/Share 18–49 = '2.1/5'