CREATE TABLE "manned_moon_landings" (
  "mission_name" text,
  "lunar_lander" text,
  "lunar_landing_date" text,
  "lunar_blastoff_date" text,
  "lunar_landing_site" text,
  "duration_on_lunar_surface" text,
  "crew" text,
  "number_of_s_eva" real,
  "total_eva_time_hh_mm" text
);

Question: Where was the landing site when the duration on the lunar surface was 21:31?
SQL: SELECT "lunar_landing_site" FROM "manned_moon_landings" WHERE "duration_on_lunar_surface"='21:31';

Question: Who were the crew for the Falcon?
SQL: SELECT "crew" FROM "manned_moon_landings" WHERE "lunar_lander"='falcon';

Question: What is the average number of EVA for the Orion?
SQL: SELECT AVG("number_of_s_eva") FROM "manned_moon_landings" WHERE "lunar_lander"='orion';