Barracks can be empty.Logical formLearned from18 sentences. A (guest house) can be empty.Logical formLearned from18 sentences. Pitchers can be empty.Logical formLearned from18 sentences. A shaft can be empty.Logical formLearned from17 sentences. An alleyway can be empty.Logical formLearned from17 sentences. A tower can be empty.Logical formLearned from17 sentences. A mass can be empty.Logical formLearned from17 sentences. Tankers can be empty.Logical formLearned from17 sentences. A season can be empty.Logical formLearned from17 sentences. (Rum bottles) can be empty.Logical formLearned from17 sentences. A set can be empty.Logical formLearned from17 sentences. A tube can be empty.Logical formLearned from17 sentences. Grounds can be empty.Logical formLearned from17 sentences. A minibuffer can be empty.Logical formLearned from17 sentences. Pipes can be empty.Logical formLearned from17 sentences.