Ridges may play a role.Logical formLearned from1 sentences. Troughs may pertain-to ridges.Logical formLearned from1 sentences. Ridges can be sections of a system.Logical formLearned from1 sentences. A boundary may follow a crest of (mountain ridges).Logical formLearned from1 sentences. A crest may pertain-to (mountain ridges).Logical formLearned from1 sentences. A divide may be make_uped of ridges.Logical formLearned from1 sentences. Ridges can be above a plain.Logical formLearned from1 sentences. Highlands may consist of a series of ridges.Logical formLearned from1 sentences. Limestone can be with ridges of outcrops.Logical formLearned from1 sentences. Ridges can be constituted-of-or-filled-with outcrops.Logical formLearned from1 sentences. (Sandstone ridges) can be red.Logical formLearned from1 sentences. (Sandstone ridges) can be lofty.Logical formLearned from1 sentences. Carapaces may have ridges.Logical formLearned from1 sentences. (Sandstone ridges) can be shaped.Logical formLearned from1 sentences. (Sandstone ridges) may tower above plains.Logical formLearned from1 sentences.