When was someone first elected in the district with incumbent john smith?
CREATE TABLE table_3623 (
    "District" text,
    "Incumbent" text,
    "Party" text,
    "First elected" text,
    "Result" text,
    "Candidates" text
)
SELECT "First elected" FROM table_3623 WHERE "Incumbent" = 'John Smith'
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: When was someone first elected in the district with incumbent john smith? ### Input: CREATE TABLE table_3623 (
    "District" text,
    "Incumbent" text,
    "Party" text,
    "First elected" text,
    "Result" text,
    "Candidates" text
) ### Response: SELECT "First elected" FROM table_3623 WHERE "Incumbent" = 'John Smith'