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_22771048_4 (city_neighborhood VARCHAR, station VARCHAR)
### Question:
How many neighborhoods have a station proposed at a Hospital?
### Answer:
SELECT COUNT(city_neighborhood) FROM table_22771048_4 WHERE station = "Hospital"