What's the first elected year of the district that Ed Towns is an incumbent of?
CREATE TABLE table_18154 (
    "District" text,
    "Incumbent" text,
    "Party" text,
    "First elected" text,
    "Results" text,
    "Candidates" text
)
SELECT "First elected" FROM table_18154 WHERE "Incumbent" = 'Ed Towns'
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's the first elected year of the district that Ed Towns is an incumbent of? ### Input: CREATE TABLE table_18154 (
    "District" text,
    "Incumbent" text,
    "Party" text,
    "First elected" text,
    "Results" text,
    "Candidates" text
) ### Response: SELECT "First elected" FROM table_18154 WHERE "Incumbent" = 'Ed Towns'