Prisms can be hollow.Logical formLearned from4 sentences. Portions can be hollow.Logical formLearned from4 sentences. Coins can be hollow.Logical formLearned from4 sentences. A joke can be hollow.Logical formLearned from4 sentences. Husks can be hollow.Logical formLearned from4 sentences. Vortices can be hollow.Logical formLearned from4 sentences. An aluminum can be hollow.Logical formLearned from4 sentences. A (brass tube) can be hollow.Logical formLearned from4 sentences. The moon can be hollow.Logical formLearned from4 sentences. A charge may ring hollow.Logical formLearned from4 sentences. A piston can be hollow.Logical formLearned from4 sentences. A canula can be hollow.Logical formLearned from4 sentences. A community can be hollow.Logical formLearned from4 sentences. An announcement can be hollow.Logical formLearned from4 sentences. A behind can be hollow.Logical formLearned from4 sentences.