Who was the constructor of the car that Jan Lammers made 7-14 rounds in?
CREATE TABLE table_52992 (
    "Constructor" text,
    "Chassis" text,
    "Engine" text,
    "Tyres" text,
    "Driver" text,
    "Rounds" text
)
SELECT "Constructor" FROM table_52992 WHERE "Driver" = 'jan lammers' AND "Rounds" = '7-14'
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 constructor of the car that Jan Lammers made 7-14 rounds in? ### Input: CREATE TABLE table_52992 (
    "Constructor" text,
    "Chassis" text,
    "Engine" text,
    "Tyres" text,
    "Driver" text,
    "Rounds" text
) ### Response: SELECT "Constructor" FROM table_52992 WHERE "Driver" = 'jan lammers' AND "Rounds" = '7-14'