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_1805191_50 (district VARCHAR, party VARCHAR, first_elected VARCHAR)
### Question:
What district first elected a Democratic incumbent in 1998?
### Answer:
SELECT district FROM table_1805191_50 WHERE party = "Democratic" AND first_elected = 1998