CREATE TABLE table_203_83 (id DECIMAL, "ranking" DECIMAL, "company" TEXT, "industry" TEXT, "revenue  ( usd billions ) " TEXT, "fy" TEXT, "capitalization  ( usd billions ) " TEXT, "employees" DECIMAL, "listing" TEXT, "headquarters" TEXT, "ceo" TEXT)

how many oil and gas industries made the top 10 in ranking of revenue list ?
SELECT COUNT("company") FROM table_203_83 WHERE "industry" = 'oil and gas' AND "ranking" <= 10
SELECT COUNT("company") FROM "table_203_83" WHERE "industry" = 'oil and gas' AND "ranking" <= 10