What is every entry for Latin when Catalan is Mar?
CREATE TABLE "table1_25401_15" (
  "english" text,
  "latin" text,
  "proto_italo_western_1" text,
  "conservative_central_italian_1" text,
  "italian" text,
  "spanish" text,
  "catalan" text,
  "old_french" text
);
SELECT "latin" FROM "table1_25401_15" WHERE "catalan"='mar';