Skis may provide stability.Logical formLearned from8 sentences. A shape of a ski may determine in part.Logical formLearned from8 sentences. An edge can be at a middle of a ski.Logical formLearned from8 sentences. A (ski resort) can be in a state.Logical formLearned from8 sentences. Some (ski trails) may be groomed.Logical formLearned from8 sentences. A (ski area) may undergo a development.Logical formLearned from8 sentences. A host can be constituted-of-or-filled-with (ski areas).Logical formLearned from8 sentences. A mountain can be (ski resort).Logical formLearned from8 sentences. A (ski area) may pertain-to a river.Logical formLearned from8 sentences. A (ski racer) can be competitive.Logical formLearned from8 sentences. A (ski federation) may say that something-is-the-case.Logical formLearned from8 sentences. A male may become a (ski jumper).Logical formLearned from8 sentences. A (ski jump) may pertain-to men.Logical formLearned from8 sentences. Some (ski slopes) can be closed.Logical formLearned from8 sentences. (Ski teams) may pertain-to a country.Logical formLearned from8 sentences.