Ridges can be above valleys.Logical formLearned from2 sentences. Ridges may vary in height.Logical formLearned from2 sentences. Ridges can be in a park.Logical formLearned from2 sentences. Mid-ocean ridges may undergo a subduction.Logical formLearned from2 sentences. Ridges may run to north.Logical formLearned from2 sentences. A column may move through a system of ridges.Logical formLearned from2 sentences. Ridges can be constituted-of-or-filled-with strata.Logical formLearned from2 sentences. A shell may have ridges.Logical formLearned from2 sentences. A discovery of ridges may suggest that something-is-the-case.Logical formLearned from2 sentences. Valleys can be with ridges.Logical formLearned from2 sentences. Low ridges can be constituted-of-or-filled-with origin.Logical formLearned from2 sentences. Some sets can be constituted-of-or-filled-with ridges.Logical formLearned from2 sentences. A continuity may pertain-to ridges.Logical formLearned from2 sentences. Ridges can be in a us-state.Logical formLearned from2 sentences. Ridges can be to the west.Logical formLearned from2 sentences.