A gulf can be empty.Logical formLearned from15 sentences. Machines can be empty.Logical formLearned from15 sentences. A clinic can be empty.Logical formLearned from15 sentences. A trail can be empty.Logical formLearned from15 sentences. A sadness can be empty.Logical formLearned from15 sentences. A buzzword can be empty.Logical formLearned from15 sentences. A (bird cage) can be empty.Logical formLearned from15 sentences. A boot can be empty.Logical formLearned from15 sentences. (Store shelves) can be empty.Logical formLearned from15 sentences. An entry can be empty.Logical formLearned from15 sentences. Some stations can be empty.Logical formLearned from15 sentences. Concepts can be empty.Logical formLearned from15 sentences. A person may be come empty.Logical formLearned from15 sentences. A company can be empty.Logical formLearned from15 sentences. A sandbox can be empty.Logical formLearned from15 sentences.