Which Latitude has a Year named smaller than 1997, and a Name of aino planitia?
CREATE TABLE "planitia" (
  "name" text,
  "latitude" text,
  "longitude" text,
  "diameter_km" real,
  "year_named" real
);
SELECT "latitude" FROM "planitia" WHERE "year_named"<1997 AND "name"='aino planitia';