A government can be hollow.Logical formLearned from7 sentences. Stares can be hollow.Logical formLearned from7 sentences. An one can be hollow.Logical formLearned from7 sentences. (Carbon fibers) can be hollow.Logical formLearned from7 sentences. (Metal spheres) can be hollow.Logical formLearned from7 sentences. A chest may feel hollow.Logical formLearned from7 sentences. A cup can be hollow.Logical formLearned from7 sentences. A field can be hollow.Logical formLearned from7 sentences. A cost can be hollow.Logical formLearned from7 sentences. Skulls can be hollow.Logical formLearned from7 sentences. Footsteps can be hollow.Logical formLearned from7 sentences. Caverns can be hollow.Logical formLearned from7 sentences. Words may remain hollow.Logical formLearned from7 sentences. A male may look hollow.Logical formLearned from7 sentences. Spokes can be hollow.Logical formLearned from7 sentences.