Who was the first couple in the episode having a fourth couple of Sammy and Nat?
CREATE TABLE table_25664518_3 (first_couple VARCHAR, fourth_couple VARCHAR)
SELECT first_couple FROM table_25664518_3 WHERE fourth_couple = "Sammy and Nat"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_25664518_3 (first_couple VARCHAR, fourth_couple VARCHAR) Question: Who was the first couple in the episode having a fourth couple of Sammy and Nat? [/INST] SELECT first_couple FROM table_25664518_3 WHERE fourth_couple = "Sammy and Nat" </s>