A threat can be hollow.Logical formLearned from90 sentences. Cheeks can be hollow.Logical formLearned from89 sentences. Walls can be hollow.Logical formLearned from89 sentences. A shaft can be hollow.Logical formLearned from86 sentences. A trunk can be hollow.Logical formLearned from86 sentences. A structure can be hollow.Logical formLearned from85 sentences. A female can be hollow.Logical formLearned from83 sentences. A male can be hollow.Logical formLearned from83 sentences. A voice can be hollow.Logical formLearned from83 sentences. A look can be hollow.Logical formLearned from82 sentences. Threats can be hollow.Logical formLearned from82 sentences. The ordinary world can be hollow.Logical formLearned from80 sentences. Cavities can be hollow.Logical formLearned from78 sentences. A cavity can be hollow.Logical formLearned from77 sentences. A mask can be hollow.Logical formLearned from77 sentences.