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_19778010_5 (date VARCHAR, opponent VARCHAR)
### Question:
On how many different dates was a game against Houston played?
### Answer:
SELECT COUNT(date) FROM table_19778010_5 WHERE opponent = "Houston"