An island can be closed.Logical formLearned from6 sentences. (List systems) can be closed.Logical formLearned from6 sentences. A church may remain closed.Logical formLearned from6 sentences. Floors can be closed.Logical formLearned from6 sentences. A (committee hearing) can be closed.Logical formLearned from6 sentences. A course can be closed.Logical formLearned from6 sentences. A closed system can be constituted-of-or-filled-with material causes.Logical formLearned from6 sentences. A building can be closed.Logical formLearned from6 sentences. A sound can be closed.Logical formLearned from6 sentences. Some containers can be closed.Logical formLearned from6 sentences. A country may remain closed to the world.Logical formLearned from6 sentences. An appearance can be closed.Logical formLearned from6 sentences. A (post office) can be closed.Logical formLearned from6 sentences. A booth can be closed.Logical formLearned from6 sentences. A stand can be closed.Logical formLearned from6 sentences.