Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_21350934_2 (round VARCHAR, attendance VARCHAR)
### Question:
How many rounds have 6,150 as attendance?
### Answer:
SELECT round FROM table_21350934_2 WHERE attendance = "6,150"