A library can be active.Logical formLearned from12 sentences. A community can be active.Logical formLearned from12 sentences. Firms can be active.Logical formLearned from12 sentences. Network can be active.Logical formLearned from12 sentences. An element can be active.Logical formLearned from12 sentences. Services can be active.Logical formLearned from12 sentences. Return can be to active duty.Logical formLearned from12 sentences. A national-agency can be active.Logical formLearned from12 sentences. Active ingredients may undergo concentrations.Logical formLearned from12 sentences. A military-or-other-action-organization can be on active duty.Logical formLearned from12 sentences. A (domain name) can be active.Logical formLearned from12 sentences. Libraries can be active.Logical formLearned from12 sentences. Active surveillance can be for diseases.Logical formLearned from12 sentences. A (screen saver) can be active.Logical formLearned from12 sentences. An active duty can be regular.Logical formLearned from12 sentences.