Provide the facility type and license number of establishments with the lowest risk level but failed the inspection.
license number refers to license_no; the lowest risk level refers to min(risk_level); failed the inspection refers to results = 'Fail'
SELECT DISTINCT T1.facility_type, T1.license_no FROM establishment AS T1 INNER JOIN inspection AS T2 ON T1.license_no = T2.license_no WHERE T1.risk_level = 1 AND T2.results = 'Fail'