CREATE TABLE table_21104 ("Name" CLOB, "Latitude" CLOB, "Longitude" CLOB, "Diameter  ( km ) " CLOB, "Year named" FLOAT, "Name origin" CLOB)

At a longitude of 293.0e, what is the diameter, in km?
SELECT "Diameter (km)" FROM table_21104 WHERE "Longitude" = '293.0E'
SELECT "Diameter (km)" FROM "table_21104" WHERE "Longitude" = '293.0E'