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_1397655_1 (other_programming_sources VARCHAR, year_acquired VARCHAR)
### Question:
how many channels were gained in 1997
### Answer:
SELECT COUNT(other_programming_sources) FROM table_1397655_1 WHERE year_acquired = 1997