CREATE TABLE "kickboxing_record" (
  "result" text,
  "record" text,
  "opponent" text,
  "method" text,
  "round" real,
  "time" text,
  "location" text
);

Question: How long was his fight against kim kyoung-suk?
SQL: SELECT "time" FROM "kickboxing_record" WHERE "opponent"='kim kyoung-suk';