Cars may undergo maintenance.Logical formLearned from13 sentences. Roadways may undergo maintenance.Logical formLearned from13 sentences. Periods can be constituted-of-or-filled-with maintenance.Logical formLearned from13 sentences. Abstinence may undergo maintenance.Logical formLearned from13 sentences. Building may undergo maintenance.Logical formLearned from13 sentences. A (maintenance program) may pertain-to a person.Logical formLearned from13 sentences. Benefits may undergo maintenance.Logical formLearned from13 sentences. Prices may undergo maintenance.Logical formLearned from13 sentences. A (call rate) can be in a (reserve maintenance period).Logical formLearned from13 sentences. (Computer systems) may undergo maintenance.Logical formLearned from13 sentences. (Maintenance costs) may pertain-to persons.Logical formLearned from13 sentences. Academic freedom may undergo maintenance.Logical formLearned from13 sentences. (Maintenance work) may be performed.Logical formLearned from13 sentences. Maintenance can be fleet.Logical formLearned from13 sentences. Maintenance can be great.Logical formLearned from13 sentences.