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_name_30 (venue VARCHAR, result VARCHAR, extra VARCHAR)
### Question:
what is the venue when the result is 2nd and extra is 4 x 100 m relay?
### Answer:
SELECT venue FROM table_name_30 WHERE result = "2nd" AND extra = "4 x 100 m relay"