Surfaces can be closed.Logical formLearned from20 sentences. Processes can be closed.Logical formLearned from20 sentences. A trail can be closed.Logical formLearned from20 sentences. A tunnel can be closed.Logical formLearned from20 sentences. A (nuclear reactor) can be closed.Logical formLearned from20 sentences. A country may keep closed.Logical formLearned from20 sentences. An international airport can be closed.Logical formLearned from20 sentences. A canal can be closed.Logical formLearned from20 sentences. A kingdom can be closed.Logical formLearned from20 sentences. Projects can be closed.Logical formLearned from20 sentences. An (auto market) can be closed.Logical formLearned from20 sentences. Bazaars may remain closed.Logical formLearned from19 sentences. (Finance firms) can be closed.Logical formLearned from19 sentences. Business may remain closed.Logical formLearned from19 sentences. (City streets) can be closed.Logical formLearned from19 sentences.