Responsibility can be for maintenance of international peace.Logical formLearned from53 sentences. A (maintenance program) can be preventative.Logical formLearned from53 sentences. Maintenance can be operational.Logical formLearned from52 sentences. Maintenance can be unplanned.Logical formLearned from52 sentences. Maintenance may be performed.Logical formLearned from52 sentences. A (maintenance fee) may undergo a payment.Logical formLearned from51 sentences. An army may undergo maintenance.Logical formLearned from51 sentences. Diversity may undergo maintenance.Logical formLearned from51 sentences. Areas may undergo maintenance.Logical formLearned from51 sentences. An aircraft may go into maintenance.Logical formLearned from51 sentences. A project may undergo maintenance.Logical formLearned from51 sentences. Maintenance may be carry_outed.Logical formLearned from50 sentences. An area may undergo maintenance.Logical formLearned from50 sentences. Costs can be for maintenance.Logical formLearned from50 sentences. A family may undergo maintenance.Logical formLearned from50 sentences.