A ceiling can be hollow.Logical formLearned from3 sentences. A novel can be hollow.Logical formLearned from3 sentences. A (chest cavity) can be hollow.Logical formLearned from3 sentences. A manner can be hollow.Logical formLearned from3 sentences. Work can be hollow.Logical formLearned from3 sentences. A cell can be hollow.Logical formLearned from3 sentences. Persons can be hollow.Logical formLearned from3 sentences. Fruits can be hollow.Logical formLearned from3 sentences. Warmth can be hollow.Logical formLearned from3 sentences. Spires can be hollow.Logical formLearned from3 sentences. An orb can be hollow.Logical formLearned from3 sentences. Gods can be hollow.Logical formLearned from3 sentences. A chair can be hollow.Logical formLearned from3 sentences. Fires can be hollow.Logical formLearned from3 sentences. A spindle can be hollow.Logical formLearned from3 sentences.