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

Question: What was the method for the resolution of nc where the fight lasted less than 3 rounds?
SQL: SELECT "method" FROM "mixed_martial_arts_record" WHERE "round"<3 AND "res"='nc';

Question: Who was the opponent during the UFC 90 event with a fight that lasted less than 4 rounds?
SQL: SELECT "opponent" FROM "mixed_martial_arts_record" WHERE "round"<4 AND "event"='ufc 90';

Question: What was the method for the resolution of the fight at UFC 160?
SQL: SELECT "method" FROM "mixed_martial_arts_record" WHERE "event"='ufc 160';