Hope can be hollow.Logical formLearned from4 sentences. A ghost can be hollow.Logical formLearned from4 sentences. (Plastic pieces) can be hollow.Logical formLearned from4 sentences. An elementary school can be hollow.Logical formLearned from4 sentences. A project can be hollow.Logical formLearned from4 sentences. A body of a guitar can be hollow.Logical formLearned from4 sentences. A (healthcare plan) can be hollow.Logical formLearned from4 sentences. A wad can be hollow.Logical formLearned from4 sentences. Explanations may ring hollow.Logical formLearned from4 sentences. Bodies can be hollow.Logical formLearned from4 sentences. A male may sound hollow.Logical formLearned from4 sentences. Pledges may ring hollow.Logical formLearned from4 sentences. A bottle can be hollow.Logical formLearned from4 sentences. A talk can be hollow.Logical formLearned from4 sentences. An abstraction can be hollow.Logical formLearned from4 sentences.