A (carbon fiber) can be hollow.Logical formLearned from2 sentences. A body of a bass can be hollow with a (center block).Logical formLearned from2 sentences. A child can be hollow.Logical formLearned from2 sentences. A connection can be hollow.Logical formLearned from2 sentences. Floats can be hollow.Logical formLearned from2 sentences. A pattern can be hollow.Logical formLearned from2 sentences. (Water reeds) can be hollow.Logical formLearned from2 sentences. A city can be hollow.Logical formLearned from2 sentences. A (sponge material) can be hollow.Logical formLearned from2 sentences. Voids can be hollow.Logical formLearned from2 sentences. A catharsis can be hollow.Logical formLearned from2 sentences. Games can be hollow.Logical formLearned from2 sentences. (Living tubes) can be hollow.Logical formLearned from2 sentences. A camshaft can be hollow.Logical formLearned from2 sentences. A (body version) can be hollow.Logical formLearned from2 sentences.