How many years had a 100 m hurdles event at the world championships in Osaka, Japan?
CREATE TABLE table_60746 (
    "Year" real,
    "Competition" text,
    "Venue" text,
    "Position" text,
    "Event" text
)
SELECT SUM("Year") FROM table_60746 WHERE "Event" = '100 m hurdles' AND "Competition" = 'world championships' AND "Venue" = 'osaka, japan'
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: How many years had a 100 m hurdles event at the world championships in Osaka, Japan? ### Input: CREATE TABLE table_60746 (
    "Year" real,
    "Competition" text,
    "Venue" text,
    "Position" text,
    "Event" text
) ### Response: SELECT SUM("Year") FROM table_60746 WHERE "Event" = '100 m hurdles' AND "Competition" = 'world championships' AND "Venue" = 'osaka, japan'