In 1994 what tournament held a ATP masters series
CREATE TABLE table_69877 (
    "Tournament" text,
    "1990" text,
    "1991" text,
    "1992" text,
    "1993" text,
    "1994" text,
    "1995" text,
    "1996" text,
    "1997" text,
    "1998" text,
    "Career SR" text
)
SELECT "1994" FROM table_69877 WHERE "Tournament" = 'atp masters series'
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: In 1994 what tournament held a ATP masters series ### Input: CREATE TABLE table_69877 (
    "Tournament" text,
    "1990" text,
    "1991" text,
    "1992" text,
    "1993" text,
    "1994" text,
    "1995" text,
    "1996" text,
    "1997" text,
    "1998" text,
    "Career SR" text
) ### Response: SELECT "1994" FROM table_69877 WHERE "Tournament" = 'atp masters series'