CREATE TABLE table_name_90 (opening_day_net_gross INT, studio_s_ VARCHAR, year VARCHAR)

What is the opening day net gross a Reliance Entertainment movie before 2011 had?
SELECT SUM(opening_day_net_gross) FROM table_name_90 WHERE studio_s_ = "reliance entertainment" AND year < 2011
SELECT SUM("opening_day_net_gross") FROM "table_name_90" WHERE "reliance entertainment" = "studio_s_" AND "year" < 2011