An igneous rock can be basic.Logical formLearned from12 sentences. Rocks can be tough.Logical formLearned from12 sentences. Rocks can be cracked.Logical formLearned from12 sentences. A (rock trio) may pertain-to a US-city.Logical formLearned from12 sentences. Igneous rocks can be alkaline.Logical formLearned from12 sentences. Rocks can be collected.Logical formLearned from12 sentences. Masses can be constituted-of-or-filled-with rocks.Logical formLearned from12 sentences. A rock can be whitish.Logical formLearned from12 sentences. Contact can be with rock.Logical formLearned from12 sentences. Hollows may pertain-to rocks.Logical formLearned from12 sentences. Rocks can be pale.Logical formLearned from12 sentences. Rocks may undergo a tumble.Logical formLearned from12 sentences. Rock can be for a person.Logical formLearned from12 sentences. Rocks can be cruel.Logical formLearned from12 sentences. A (rock debris) can be hot.Logical formLearned from12 sentences.