In which years are co-stars  mala sinha and amitabh bachchan?
CREATE TABLE table_2528382_2 (year VARCHAR, co_stars VARCHAR)
SELECT year FROM table_2528382_2 WHERE co_stars = "Mala Sinha and Amitabh Bachchan"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_2528382_2 (year VARCHAR, co_stars VARCHAR) Question: In which years are co-stars  mala sinha and amitabh bachchan? [/INST] SELECT year FROM table_2528382_2 WHERE co_stars = "Mala Sinha and Amitabh Bachchan" </s>