Which time has a Method of decision(majority), and an Opponent of keisuke yamada?
CREATE TABLE "mixed_martial_arts_record" (
  "res" text,
  "record" text,
  "opponent" text,
  "method" text,
  "event" text,
  "round" real,
  "time" text
);
SELECT "time" FROM "mixed_martial_arts_record" WHERE "method"='decision(majority)' AND "opponent"='keisuke yamada';