Who was the jockey at Rosehill and the weight was 57.5 kg?
CREATE TABLE table_18865 (
    "Result" text,
    "Date" text,
    "Race" text,
    "Venue" text,
    "Group" text,
    "Distance" text,
    "Weight (kg)" text,
    "Time" text,
    "Jockey" text,
    "Winner/2nd" text
)
SELECT "Jockey" FROM table_18865 WHERE "Venue" = 'Rosehill' AND "Weight (kg)" = '57.5'
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 jockey at Rosehill and the weight was 57.5 kg? ### Input: CREATE TABLE table_18865 (
    "Result" text,
    "Date" text,
    "Race" text,
    "Venue" text,
    "Group" text,
    "Distance" text,
    "Weight (kg)" text,
    "Time" text,
    "Jockey" text,
    "Winner/2nd" text
) ### Response: SELECT "Jockey" FROM table_18865 WHERE "Venue" = 'Rosehill' AND "Weight (kg)" = '57.5'