What is Date, when Tournament, is Greenbrier Classic?
CREATE TABLE table_45100 (
    "Date" text,
    "Tournament" text,
    "Winning score" text,
    "Margin of victory" text,
    "Runner(s)-up" text
)
SELECT "Date" FROM table_45100 WHERE "Tournament" = 'greenbrier classic'
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: What is Date, when Tournament, is Greenbrier Classic? ### Input: CREATE TABLE table_45100 (
    "Date" text,
    "Tournament" text,
    "Winning score" text,
    "Margin of victory" text,
    "Runner(s)-up" text
) ### Response: SELECT "Date" FROM table_45100 WHERE "Tournament" = 'greenbrier classic'