Orbitals can be empty.Logical formLearned from11 sentences. A return can be empty.Logical formLearned from11 sentences. A canteen can be empty.Logical formLearned from11 sentences. Islands can be empty.Logical formLearned from11 sentences. Bits can be empty.Logical formLearned from11 sentences. A gallon can be empty.Logical formLearned from11 sentences. A trunk can be empty.Logical formLearned from11 sentences. A (park bench) can be empty.Logical formLearned from11 sentences. Planes can be empty.Logical formLearned from11 sentences. Bins can be empty.Logical formLearned from11 sentences. (Jam jars) can be empty.Logical formLearned from11 sentences. A (coke can) can be empty.Logical formLearned from11 sentences. A main road can be empty.Logical formLearned from11 sentences. A beckoning can be empty.Logical formLearned from11 sentences. (Aluminum plates) can be empty.Logical formLearned from11 sentences.