CREATE TABLE table_name_32 (horse_1 VARCHAR, rider_1 VARCHAR, association VARCHAR)

Which horse was Horse 1 when ren guzm n raced with the mulch n association?
SELECT horse_1 FROM table_name_32 WHERE rider_1 = "rené guzmán" AND association = "mulchén"
SELECT "horse_1" FROM "table_name_32" WHERE "association" = "mulchén" AND "rené guzmán" = "rider_1"