SELECT * FROM table_train_228 WHERE heart_disease = 1 AND ejection_fraction_ef < 30
history of heart failure with ef < 30
CREATE TABLE table_train_228 (
    "id" int,
    "ejection_fraction_ef" int,
    "hiv_infection" bool,
    "heart_disease" bool,
    "body_weight" float,
    "body_mass_index_bmi" float,
    "allergy_to_beef" bool,
    "NOUSE" float
)