A (soda can) can be empty.Logical formLearned from46 sentences. A (waiting room) can be empty.Logical formLearned from46 sentences. Floors can be empty.Logical formLearned from46 sentences. A structure can be empty.Logical formLearned from45 sentences. A post can be empty.Logical formLearned from45 sentences. A tunnel can be empty.Logical formLearned from45 sentences. An (eye socket) can be empty.Logical formLearned from45 sentences. (Oil drums) can be empty.Logical formLearned from45 sentences. A billboard can be empty.Logical formLearned from45 sentences. A camp can be empty.Logical formLearned from45 sentences. Channels can be empty.Logical formLearned from45 sentences. A line can be empty.Logical formLearned from45 sentences. Faces can be empty.Logical formLearned from45 sentences. Corners can be empty.Logical formLearned from45 sentences. Bookshelves can be empty.Logical formLearned from45 sentences.