Limbs can be hollow.Logical formLearned from3 sentences. A niche can be hollow.Logical formLearned from3 sentences. A tin can be hollow.Logical formLearned from3 sentences. Designs can be hollow.Logical formLearned from3 sentences. (Plastic tubes) can be hollow.Logical formLearned from3 sentences. A running can be hollow.Logical formLearned from3 sentences. (Metal hemispheres) can be hollow.Logical formLearned from3 sentences. A wick can be hollow.Logical formLearned from3 sentences. A prosperity can be hollow.Logical formLearned from3 sentences. Victories can be hollow.Logical formLearned from3 sentences. Estates can be hollow.Logical formLearned from3 sentences. A notion can be hollow.Logical formLearned from3 sentences. A building can be hollow.Logical formLearned from3 sentences. A time can be hollow.Logical formLearned from3 sentences. Confidence can be hollow.Logical formLearned from3 sentences.