Which round was the circuit Assen
CREATE TABLE table_15187794_1 (round VARCHAR, circuit VARCHAR)
SELECT round FROM table_15187794_1 WHERE circuit = "Assen"
### Context: CREATE TABLE table_15187794_1 (round VARCHAR, circuit VARCHAR) ### Question: Which round was the circuit Assen ### Answer: SELECT round FROM table_15187794_1 WHERE circuit = "Assen"