An envelope can be closed.Logical formLearned from5 sentences. Topics can be closed.Logical formLearned from5 sentences. A (stack library) can be closed.Logical formLearned from5 sentences. Labs can be closed.Logical formLearned from5 sentences. A (condenser iris diaphragm) can be closed.Logical formLearned from5 sentences. A (lock symbol) can be closed.Logical formLearned from5 sentences. A crowd can be closed.Logical formLearned from5 sentences. A representation can be closed.Logical formLearned from5 sentences. An iphone can be a closed system.Logical formLearned from5 sentences. A closed list can be constituted-of-or-filled-with claims.Logical formLearned from5 sentences. An eyelid can be closed.Logical formLearned from5 sentences. A closed session may be planned.Logical formLearned from5 sentences. An abdomen can be closed.Logical formLearned from5 sentences. An object can be closed.Logical formLearned from5 sentences. (Mailing lists) can be closed.Logical formLearned from5 sentences.