A (maintenance plan) can be long-term.Logical formLearned from19 sentences. (Software systems) may undergo maintenance.Logical formLearned from19 sentences. A military may undergo maintenance.Logical formLearned from19 sentences. Machinery may undergo maintenance.Logical formLearned from19 sentences. Maintenance may pertain-to a company.Logical formLearned from19 sentences. (Maintenance payments) may undergo a definition.Logical formLearned from19 sentences. An empire may undergo maintenance.Logical formLearned from19 sentences. An (aviation maintenance plant) can be in a female.Logical formLearned from19 sentences. A general director may pertain-to an (aviation maintenance plant).Logical formLearned from19 sentences. (Maintenance charges) can be annual.Logical formLearned from19 sentences. A government may undergo maintenance.Logical formLearned from18 sentences. A system may require maintenance.Logical formLearned from18 sentences. A base may undergo maintenance.Logical formLearned from18 sentences. A (system maintenance) can be regular.Logical formLearned from18 sentences. Public buildings may undergo maintenance.Logical formLearned from18 sentences.