Properties may undergo maintenance.Logical formLearned from28 sentences. Parks may undergo maintenance.Logical formLearned from28 sentences. Power may undergo maintenance.Logical formLearned from28 sentences. Values may undergo maintenance.Logical formLearned from28 sentences. An (exchange rate) may undergo maintenance.Logical formLearned from28 sentences. Revenue can be from maintenance.Logical formLearned from28 sentences. Problems can be with maintenance.Logical formLearned from28 sentences. (Maintenance depots) may pertain-to a military-or-other-action-organization.Logical formLearned from28 sentences. Instruments may undergo maintenance.Logical formLearned from27 sentences. Maintenance can be an issue.Logical formLearned from27 sentences. Trains may undergo maintenance.Logical formLearned from27 sentences. The grounds may undergo maintenance.Logical formLearned from27 sentences. Maintenance may be included.Logical formLearned from27 sentences. (Blood pressure) may undergo maintenance.Logical formLearned from27 sentences. Maintenance may be scheduled.Logical formLearned from27 sentences.