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_19 (venue VARCHAR, event VARCHAR, competition VARCHAR)
### Question:
Where was the London Marathon held?
### Answer:
SELECT venue FROM table_name_19 WHERE event = "marathon" AND competition = "london marathon"