A rock can be sandy.Logical formLearned from15 sentences. Pieces can be on rocks.Logical formLearned from15 sentences. A rock can be hewn.Logical formLearned from15 sentences. A person may play (rock music).Logical formLearned from15 sentences. (Rock bands) may perform.Logical formLearned from15 sentences. A person may drop a rock.Logical formLearned from15 sentences. Prices can be at (rock bottom).Logical formLearned from15 sentences. A character may pertain-to rocks.Logical formLearned from15 sentences. Rocks can be complex.Logical formLearned from15 sentences. A female may have a rock.Logical formLearned from15 sentences. A person may choose rock.Logical formLearned from15 sentences. A person may say rocks.Logical formLearned from15 sentences. Some piece can be constituted-of-or-filled-with rock.Logical formLearned from15 sentences. (Rock formations) can be stunning.Logical formLearned from15 sentences. A rock can be on the ground.Logical formLearned from15 sentences.