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_name_18 (official_website VARCHAR, dish VARCHAR, callsign VARCHAR)
### Question:
Name the official website which has dish of • and callsign of kvtv
### Answer:
SELECT official_website FROM table_name_18 WHERE dish = "•" AND callsign = "kvtv"