How many years correspond to longitude of 36.8e and diameter greater than 697?
CREATE TABLE "chasma" (
  "name" text,
  "latitude" text,
  "longitude" text,
  "diameter_km" real,
  "year_named" real
);
SELECT COUNT("year_named") FROM "chasma" WHERE "longitude"='36.8e' AND "diameter_km">697;