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_1 (weekly_rank___number_ VARCHAR)
### Question:
Name the 18-49 rating for weekly rank of 30
### Answer:
SELECT 18 AS _49__rating_share_ FROM table_name_1 WHERE weekly_rank___number_ = "30"