What is the Diameter (mi) when the Longitude is 79.8 e?
CREATE TABLE table_39991 (
    "Gill" text,
    "Latitude" text,
    "Longitude" text,
    "Diameter (km)" text,
    "Diameter (mi)" text
)
SELECT "Diameter (mi)" FROM table_39991 WHERE "Longitude" = '79.8° e'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the Diameter (mi) when the Longitude is 79.8 e? ### Input: CREATE TABLE table_39991 (
    "Gill" text,
    "Latitude" text,
    "Longitude" text,
    "Diameter (km)" text,
    "Diameter (mi)" text
) ### Response: SELECT "Diameter (mi)" FROM table_39991 WHERE "Longitude" = '79.8° e'