An era can be unipolar.Logical formLearned from20 sentences. Themes may pertain-to an era.Logical formLearned from20 sentences. A relic can be from an era.Logical formLearned from20 sentences. A nature may pertain-to an era.Logical formLearned from20 sentences. Seasons may pertain-to an era.Logical formLearned from20 sentences. An era may pertain-to a building.Logical formLearned from20 sentences. A coach may pertain-to an era.Logical formLearned from20 sentences. An era can be restless.Logical formLearned from20 sentences. Golfers may pertain-to an era.Logical formLearned from20 sentences. The world can be like in an era.Logical formLearned from20 sentences. An era can be dead.Logical formLearned from20 sentences. An era can be at a US-city.Logical formLearned from20 sentences. A new era can be constituted-of-or-filled-with peacemakings.Logical formLearned from20 sentences. Leaders may pertain-to an era.Logical formLearned from20 sentences. An era can be constituted-of-or-filled-with cost-cutting.Logical formLearned from20 sentences.