What date has boston as the visitor?
CREATE TABLE table_37847 (
    "Date" text,
    "Visitor" text,
    "Score" text,
    "Home" text,
    "Record" text
)
SELECT "Date" FROM table_37847 WHERE "Visitor" = 'boston'
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 date has boston as the visitor? ### Input: CREATE TABLE table_37847 (
    "Date" text,
    "Visitor" text,
    "Score" text,
    "Home" text,
    "Record" text
) ### Response: SELECT "Date" FROM table_37847 WHERE "Visitor" = 'boston'