An (exhaust valve) can be closed.Logical formLearned from4 sentences. Sidings can be closed.Logical formLearned from4 sentences. A (bolt firing cycle) can be closed.Logical formLearned from4 sentences. Strikes can be closed.Logical formLearned from4 sentences. An exit may remain closed.Logical formLearned from4 sentences. An entropy of a closed system may decrease.Logical formLearned from4 sentences. A capsulotomy can be closed.Logical formLearned from4 sentences. A cube can be closed.Logical formLearned from4 sentences. A captioner can be closed.Logical formLearned from4 sentences. Electoral rolls can be closed.Logical formLearned from4 sentences. A (border zone) can be closed.Logical formLearned from4 sentences. Building can be closed.Logical formLearned from4 sentences. A closed beta may pertain-to a game.Logical formLearned from4 sentences. A (curve c) can be closed.Logical formLearned from4 sentences. (Underground stations) can be closed.Logical formLearned from4 sentences.