Ridges may be separated by troughs.Logical formLearned from2 sentences. Ridges can be wide.Logical formLearned from2 sentences. Sands can be in ridges.Logical formLearned from2 sentences. A shrub can be on ridges.Logical formLearned from2 sentences. Ridges can be to a northeast.Logical formLearned from2 sentences. Mid-ocean ridges can be active.Logical formLearned from2 sentences. A shape may be formed by some ridges.Logical formLearned from2 sentences. A placement can be on ridges.Logical formLearned from2 sentences. A mountain can be with ridges.Logical formLearned from2 sentences. Heads can be with ridges.Logical formLearned from2 sentences. Some ridges can be on_top_of a head.Logical formLearned from2 sentences. (Loam series soils) may be isolated from areas by ridges.Logical formLearned from2 sentences. Ridges may undergo a fusion.Logical formLearned from2 sentences. Ridges may be left by dredges.Logical formLearned from2 sentences. Ridges may undergo a use.Logical formLearned from2 sentences.