Name the icb sector for ai
CREATE TABLE "composition" (
  "company" text,
  "icb_sector" text,
  "ticker_symbol" text,
  "index_weighting_pct_at_17_january_2013" text,
  "market_cap_at_april_2013" text
);
SELECT "icb_sector" FROM "composition" WHERE "ticker_symbol"='AI';