What is the smallest quantity displayed under the title 'first runner-up'?
CREATE TABLE table_31402 (
    "Rank" real,
    "Country/Territory" text,
    "Miss International" real,
    "1st Runner-up" real,
    "2nd Runner-up" real,
    "3rd Runner-up" real,
    "4th Runner-up" real,
    "Semifinalists" real,
    "Total" real
)
SELECT MIN("1st Runner-up") FROM table_31402
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 smallest quantity displayed under the title 'first runner-up'? ### Input: CREATE TABLE table_31402 (
    "Rank" real,
    "Country/Territory" text,
    "Miss International" real,
    "1st Runner-up" real,
    "2nd Runner-up" real,
    "3rd Runner-up" real,
    "4th Runner-up" real,
    "Semifinalists" real,
    "Total" real
) ### Response: SELECT MIN("1st Runner-up") FROM table_31402