Some square miles can be constituted-of-or-filled-with ridges.Logical formLearned from1 sentences. A ridge can be alpine.Logical formLearned from1 sentences. Settlements can be on a (mountain ridge).Logical formLearned from1 sentences. A place can be on a ridge.Logical formLearned from1 sentences. Ramps can be (foam ridges).Logical formLearned from1 sentences. (Foam ridges) may run.Logical formLearned from1 sentences. Ridges can be plowed.Logical formLearned from1 sentences. A ridge can be constituted-of-or-filled-with (marsh grass).Logical formLearned from1 sentences. A ridge can be rare.Logical formLearned from1 sentences. A ridge can be in a midst of neighborhoods.Logical formLearned from1 sentences. Persons may top a ridge.Logical formLearned from1 sentences. A (ridge top) can be in the north.Logical formLearned from1 sentences. An attack may pass_over a (ridge top).Logical formLearned from1 sentences. A ridge can be in a midst of a counterattack.Logical formLearned from1 sentences. (Ridge tops) can be flat.Logical formLearned from1 sentences.