(Rubber tubes) can be hollow.Logical formLearned from3 sentences. Globules can be hollow.Logical formLearned from3 sentences. A prism can be hollow.Logical formLearned from3 sentences. A tissue can be hollow.Logical formLearned from3 sentences. A sphere can be hollow.Logical formLearned from3 sentences. A relationship can be hollow.Logical formLearned from3 sentences. Pleasures can be hollow.Logical formLearned from3 sentences. A hypodermic needle can be hollow.Logical formLearned from3 sentences. An allure can be hollow.Logical formLearned from3 sentences. A (fiber module) can be hollow.Logical formLearned from3 sentences. Tops can be hollow.Logical formLearned from3 sentences. Concrete bricks can be hollow.Logical formLearned from3 sentences. A (concrete structure) can be hollow.Logical formLearned from3 sentences. (Aluminum tubes) can be hollow.Logical formLearned from3 sentences. Chuckles can be hollow.Logical formLearned from3 sentences.