Who was the runner up for the Nagapattinam constituency?
CREATE TABLE table_2703 (
    "Constituency" text,
    "Winner" text,
    "Party" text,
    "Margin" real,
    "Runner-up a" text,
    "Party a" text
)
SELECT "Runner-up a" FROM table_2703 WHERE "Constituency" = 'Nagapattinam'
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: Who was the runner up for the Nagapattinam constituency? ### Input: CREATE TABLE table_2703 (
    "Constituency" text,
    "Winner" text,
    "Party" text,
    "Margin" real,
    "Runner-up a" text,
    "Party a" text
) ### Response: SELECT "Runner-up a" FROM table_2703 WHERE "Constituency" = 'Nagapattinam'