Calls can be empty.Logical formLearned from16 sentences. A system can be empty.Logical formLearned from16 sentences. A (cash register) can be empty.Logical formLearned from16 sentences. Concessions can be empty.Logical formLearned from16 sentences. A scabbard can be empty.Logical formLearned from15 sentences. Parcels can be empty.Logical formLearned from15 sentences. Interiors can be empty.Logical formLearned from15 sentences. (Dwelling management orders) can be empty.Logical formLearned from15 sentences. (Hand techniques) can be empty.Logical formLearned from15 sentences. A soundstage can be empty.Logical formLearned from15 sentences. A variable can be empty.Logical formLearned from15 sentences. Farms can be empty.Logical formLearned from15 sentences. (Government coffers) can be empty.Logical formLearned from15 sentences. Stalls can be empty.Logical formLearned from15 sentences. Bubbles can be empty.Logical formLearned from15 sentences.