Maintenance can be regular.Logical formLearned from2 327 sentences. Maintenance can be high.Logical formLearned from1 599 sentences. Peace may undergo maintenance.Logical formLearned from1 388 sentences. International peace may undergo maintenance.Logical formLearned from996 sentences. Maintenance can be long-term.Logical formLearned from756 sentences. Facilities may undergo maintenance.Logical formLearned from729 sentences. Maintenance can be annual.Logical formLearned from551 sentences. Law may undergo maintenance.Logical formLearned from531 sentences. Maintenance can be corrective.Logical formLearned from516 sentences. Maintenance can be basic.Logical formLearned from507 sentences. Equipment may undergo maintenance.Logical formLearned from483 sentences. Maintenance can be easy.Logical formLearned from478 sentences. A system may undergo maintenance.Logical formLearned from471 sentences. Highways may undergo maintenance.Logical formLearned from440 sentences. Stability may undergo maintenance.Logical formLearned from438 sentences.