A librarian can be on duty.Logical formLearned from34 sentences. Duties can be appointed.Logical formLearned from34 sentences. A doctor can be on duty.Logical formLearned from34 sentences. A son may feel a duty.Logical formLearned from34 sentences. Tours of duty may be extended by some days.Logical formLearned from34 sentences. A duty may undergo an abdication.Logical formLearned from34 sentences. A (police officer) can be on duty.Logical formLearned from34 sentences. A male may have duty.Logical formLearned from34 sentences. A duty may be owed.Logical formLearned from34 sentences. (Police officers) may die in a line of duty.Logical formLearned from34 sentences. Duties may pertain-to a commission.Logical formLearned from34 sentences. A duty may pertain-to a judiciary.Logical formLearned from34 sentences. Duties may take a male.Logical formLearned from34 sentences. A duty may pertain-to a doctor.Logical formLearned from34 sentences. Regard can be to a duty.Logical formLearned from34 sentences.