Who is the incumbent that is listed with the candidates listed as marilyn lloyd (d) 57.4% harold w. coker (r) 42.6%?
CREATE TABLE table_18248 (
    "District" text,
    "Incumbent" text,
    "Party" text,
    "First elected" real,
    "Result" text,
    "Candidates" text
)
SELECT "Incumbent" FROM table_18248 WHERE "Candidates" = 'Marilyn Lloyd (D) 57.4% Harold W. Coker (R) 42.6%'
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 is the incumbent that is listed with the candidates listed as marilyn lloyd (d) 57.4% harold w. coker (r) 42.6%? ### Input: CREATE TABLE table_18248 (
    "District" text,
    "Incumbent" text,
    "Party" text,
    "First elected" real,
    "Result" text,
    "Candidates" text
) ### Response: SELECT "Incumbent" FROM table_18248 WHERE "Candidates" = 'Marilyn Lloyd (D) 57.4% Harold W. Coker (R) 42.6%'