Rocks may pertain-to a cliff.Logical formLearned from4 sentences. (Sandstone cliffs) can be rugged.Logical formLearned from4 sentences. A cliff can be above a city.Logical formLearned from4 sentences. A top may pertain-to a (granite cliff).Logical formLearned from4 sentences. Cliffs may be protected.Logical formLearned from4 sentences. A (cliff face) may pertain-to a mountain.Logical formLearned from4 sentences. Markets may go off a cliff.Logical formLearned from4 sentences. A house may sit on a cliff.Logical formLearned from4 sentences. A male may notice a growing on a face of a cliff.Logical formLearned from4 sentences. A person may hang off a cliff.Logical formLearned from4 sentences. Some statues may be carven into a (cliff face).Logical formLearned from4 sentences. A decline may fall off a cliff.Logical formLearned from4 sentences. Top may pertain-to a cliff.Logical formLearned from4 sentences. Persons may walk to a cliff.Logical formLearned from4 sentences. A curve may pertain-to a cliff.Logical formLearned from4 sentences.