Which astronaut went on the Apollo 16 mission at the age of 36y 6m 18d to step on the moon?
CREATE TABLE "apollo_astronauts_who_walked_on_the_moon" (
  "name" text,
  "born" text,
  "age_at_first_step" text,
  "mission" text,
  "lunar_eva_dates" text,
  "service" text
);
SELECT "name" FROM "apollo_astronauts_who_walked_on_the_moon" WHERE "mission"='apollo 16' AND "age_at_first_step"='36y 6m 18d';