What is the second leg that Valencia was on?
CREATE TABLE table_68891 (
    "Team 1" text,
    "Agg." text,
    "Team 2" text,
    "1st leg" text,
    "2nd leg" text
)
SELECT "2nd leg" FROM table_68891 WHERE "Team 2" = 'valencia'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the second leg that Valencia was on? ### Input: CREATE TABLE table_68891 (
    "Team 1" text,
    "Agg." text,
    "Team 2" text,
    "1st leg" text,
    "2nd leg" text
) ### Response: SELECT "2nd leg" FROM table_68891 WHERE "Team 2" = 'valencia'