Name the market cap where 2013 rev is 2.8
CREATE TABLE "forbes_global_2000" (
  "april_2013_cum_rank" real,
  "name" text,
  "rank_2012" real,
  "rank_2013" real,
  "base" text,
  "2013_rev_bil_usd" text,
  "2013_profit_mil_usd" text,
  "assets_2013_bil" text,
  "market_cap_march_15_mil" real
);
SELECT "market_cap_march_15_mil" FROM "forbes_global_2000" WHERE "2013_rev_bil_usd"='2.8';