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_24673888_1 (ch__number VARCHAR, branding VARCHAR)
### Question:
What is the channel number that has a branding of PTV 4 Laoag?
### Answer:
SELECT ch__number FROM table_24673888_1 WHERE branding = "PTV 4 Laoag"