instruction: tell me the name of the allergy patient 006-42293 has since 51 months ago?
response: SELECT allergy.allergyname FROM allergy WHERE allergy.patientunitstayid IN (SELECT patient.patientunitstayid FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '006-42293')) AND DATETIME(allergy.allergytime) >= DATETIME(CURRENT_TIME(), '-51 month')