A lap can be empty.Logical formLearned from14 sentences. Prophecies can be empty.Logical formLearned from14 sentences. (Combat boots) can be empty.Logical formLearned from14 sentences. A sofa can be empty.Logical formLearned from14 sentences. A matchbox can be empty.Logical formLearned from14 sentences. A database can be empty.Logical formLearned from14 sentences. Small towns can be empty.Logical formLearned from14 sentences. Highways can be empty.Logical formLearned from14 sentences. Signs can be empty.Logical formLearned from14 sentences. Airports can be empty.Logical formLearned from14 sentences. A (cereal bowl) can be empty.Logical formLearned from14 sentences. An alley can be empty.Logical formLearned from14 sentences. Hands can be empty.Logical formLearned from14 sentences. Neighborhoods can be empty.Logical formLearned from14 sentences. Taxis can be empty.Logical formLearned from14 sentences.