CREATE TABLE "250_million_or_more_records" (
  "artist" text,
  "country_of_origin" text,
  "period_active" text,
  "release_year_of_first_charted_record" real,
  "genre" text,
  "claimed_sales" text
);

Question: What genre is Led Zeppelin?
SQL: SELECT "genre" FROM "250_million_or_more_records" WHERE "artist"='led zeppelin';