Who is the Monarch whose Heir is Robert Curthose when the Reason is that the father became king?
CREATE TABLE table_name_67 (
    monarch VARCHAR,
    heir VARCHAR,
    reason VARCHAR
)
SELECT monarch FROM table_name_67 WHERE heir = "robert curthose" AND reason = "father became king"
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 Monarch whose Heir is Robert Curthose when the Reason is that the father became king? ### Input: CREATE TABLE table_name_67 (
    monarch VARCHAR,
    heir VARCHAR,
    reason VARCHAR
) ### Response: SELECT monarch FROM table_name_67 WHERE heir = "robert curthose" AND reason = "father became king"