A base can be empty.Logical formLearned from41 sentences. A hospital can be empty.Logical formLearned from41 sentences. Casings can be empty.Logical formLearned from41 sentences. Beaches can be empty.Logical formLearned from41 sentences. A coffin can be empty.Logical formLearned from40 sentences. A cross can be empty.Logical formLearned from40 sentences. A reservoir can be empty.Logical formLearned from40 sentences. Ships can be empty.Logical formLearned from40 sentences. A cage can be empty.Logical formLearned from40 sentences. Columns can be empty.Logical formLearned from40 sentences. Cardboard boxes can be empty.Logical formLearned from40 sentences. Chairs can be empty.Logical formLearned from40 sentences. A cupboard can be empty.Logical formLearned from40 sentences. A club can be empty.Logical formLearned from40 sentences. A podium can be empty.Logical formLearned from40 sentences.