CREATE TABLE "mixed_martial_arts_record" (
  "res" text,
  "record" text,
  "opponent" text,
  "method" text,
  "event" text,
  "round" real,
  "time" text
);

Question: What opponent uses the method of decision and a 5-3 record?
SQL: SELECT "opponent" FROM "mixed_martial_arts_record" WHERE "method"='decision' AND "record"='5-3';

Question: What round has the highest Res loss, and a time of 40:00?
SQL: SELECT MAX("round") FROM "mixed_martial_arts_record" WHERE "res"='loss' AND "time"='40:00';