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

Question: What is the total number of Round with a Method of submission (ankle lock), a Location of tokyo, japan, and a Record of 13-5-2?
SQL: SELECT SUM("round") FROM "mixed_martial_arts_record" WHERE "method"='submission (ankle lock)' AND "location"='tokyo, japan' AND "record"='13-5-2';