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

Question: What is the Diameter (km) of the Valle with a Longitude of 152.5e named before 1997?
SQL: SELECT MAX("diameter_km") FROM "valles" WHERE "longitude"='152.5e' AND "year_named"<1997;

Question: What is the Year named of the Ganga Valles?
SQL: SELECT MAX("year_named") FROM "valles" WHERE "name"='ganga valles';

Question: What is the Latitude of the Alajen Vallis named after 1997?
SQL: SELECT "latitude" FROM "valles" WHERE "year_named">1997 AND "name"='alajen vallis';