Which round had a city/location of Toronto, Ontario?
CREATE TABLE table_43541 (
    "Round" real,
    "Race Name" text,
    "Circuit" text,
    "City/Location" text,
    "Date" text
)
SELECT "Round" FROM table_43541 WHERE "City/Location" = 'toronto, ontario'
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: Which round had a city/location of Toronto, Ontario? ### Input: CREATE TABLE table_43541 (
    "Round" real,
    "Race Name" text,
    "Circuit" text,
    "City/Location" text,
    "Date" text
) ### Response: SELECT "Round" FROM table_43541 WHERE "City/Location" = 'toronto, ontario'