CREATE TABLE "dorsa" (
  "name" text,
  "latitude" text,
  "longitude" text,
  "diameter_km" text,
  "year_named" real,
  "name_origin" text
);

Question: How many numbers are listed under diameter with a lattitude of 5.0n?
SQL: SELECT COUNT("diameter_km") FROM "dorsa" WHERE "latitude"='5.0N';

Question: What is the name origin with a diameter of 220.0 kilometers?
SQL: SELECT "name_origin" FROM "dorsa" WHERE "diameter_km"='220.0';

Question: What is the name of feature with a longitude 246.0e?
SQL: SELECT "name" FROM "dorsa" WHERE "longitude"='246.0E';