SCHEMA:
CREATE TABLE table_25751274_2 (rating VARCHAR, share VARCHAR)
USER:
What is the rating of the episode with a share of 4 and a rating/share (18-49) of 0.7/2?

QUERY:
SELECT rating FROM table_25751274_2 WHERE share = 4 AND rating / SHARE(18 - 49) = 0.7 / 2