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_2417390_4 (district VARCHAR, date_successor_seated VARCHAR)
### Question:
What district was the successor seated in March 28, 1878?
### Answer:
SELECT district FROM table_2417390_4 WHERE date_successor_seated = "March 28, 1878"