CREATE TABLE table_train_195 ("id" INT, "gender" TEXT, "pregnancy_or_lactation" BOOLEAN, "allergy_to_perflutren" BOOLEAN, "heart_disease" BOOLEAN, "body_mass_index_bmi" FLOAT, "age" FLOAT, "NOUSE" FLOAT)

male or female 20 _ 75 years of age inclusive.
SELECT * FROM table_train_195 WHERE (gender = 'male' OR gender = 'female') AND (age >= 20 AND age <= 75)
SELECT * FROM "table_train_195" WHERE "age" <= 75 AND "age" >= 20 AND ("gender" = 'female' OR "gender" = 'male')