CREATE TABLE "fourth_quarter" (
  "rank" real,
  "name" text,
  "headquarters" text,
  "primary_industry" text,
  "market_value_usd_million" real
);

Question: Where is Exxon Mobil, an oil and gas corporation, headquartered?
SQL: SELECT "headquarters" FROM "fourth_quarter" WHERE "primary_industry"='oil and gas' AND "name"='exxon mobil';