A cliff can be over a river.Logical formLearned from4 sentences. Wild goats can be among cliffs of a valley.Logical formLearned from4 sentences. A sea may wear_away a line of cliff of a height.Logical formLearned from4 sentences. Persons may stand on a cliff.Logical formLearned from4 sentences. A person may go off a cliff.Logical formLearned from4 sentences. A cliff may overlook a bay.Logical formLearned from4 sentences. A cliff can be constituted-of-or-filled-with crystal.Logical formLearned from4 sentences. Lines can be constituted-of-or-filled-with cliff.Logical formLearned from4 sentences. A person may come to an edge of a cliff.Logical formLearned from4 sentences. A fissure may pertain-to a cliff.Logical formLearned from4 sentences. A top may pertain-to a (cliff face).Logical formLearned from4 sentences. An (ice cliff) can be steep.Logical formLearned from4 sentences. Cliffs may be located.Logical formLearned from4 sentences. Gullies may be seen on cliffs.Logical formLearned from4 sentences. Some rock-slide can be from cliffs.Logical formLearned from4 sentences.