An entire can be empty.Logical formLearned from9 sentences. A (soccer stadium) can be empty.Logical formLearned from9 sentences. A chariot can be empty.Logical formLearned from9 sentences. A (lunch box) can be empty.Logical formLearned from9 sentences. A dwelling can be empty.Logical formLearned from9 sentences. Parent can be an empty string.Logical formLearned from9 sentences. A filename can be empty.Logical formLearned from9 sentences. Berths can be empty.Logical formLearned from9 sentences. A (pop bottle) can be empty.Logical formLearned from9 sentences. A (track side) can be empty.Logical formLearned from9 sentences. Railcars can be empty.Logical formLearned from9 sentences. A building may be left empty.Logical formLearned from9 sentences. A map can be empty.Logical formLearned from9 sentences. Pharmacies can be empty.Logical formLearned from9 sentences. Holds can be empty.Logical formLearned from9 sentences.