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_57 (trident VARCHAR, gecko VARCHAR)
### Question:
Which Trident version has a Gecko value of 19.0?
### Answer:
SELECT trident FROM table_name_57 WHERE gecko = "19.0"