Question: top 10 biggest companies in the world wikipedia
Answer: Sinopec; Sinopec Limited; Sinopec Group; China Petroleum & Chemical Corporation; Walmart; Wal-Mart Stores, Inc.; Walmart, Inc.; Walmart Inc.; Wal Mart; Wal-Mart; State Grid Corporation of China; SGCC; Royal Dutch Shell; Royal Dutch Shell plc; RDS; Shell; China National Petroleum Corporation; CNPC