A rock can be hard.Logical formLearned from115 sentences. Rocks can be broken.Logical formLearned from115 sentences. Structures may be used for (rock concerts).Logical formLearned from114 sentences. A (rock star name) may pertain-to a person.Logical formLearned from114 sentences. A rock can be cold.Logical formLearned from114 sentences. A person may be stuck between a rock.Logical formLearned from113 sentences. A rock can be true.Logical formLearned from113 sentences. A (rock band) may pertain-to a us-state.Logical formLearned from112 sentences. Rocks can be terrestrial.Logical formLearned from111 sentences. A (rock music) may pertain-to a male.Logical formLearned from110 sentences. Rocks may undergo a weathering.Logical formLearned from110 sentences. Rocks can be solid.Logical formLearned from110 sentences. Someone may throw a rock.Logical formLearned from109 sentences. Fragments can be constituted-of-or-filled-with rock.Logical formLearned from109 sentences. Rocks can be dangerous.Logical formLearned from108 sentences.