A superpower may have interest.Logical formLearned from7 sentences. A superpower may pertain-to a century.Logical formLearned from7 sentences. A picture may show a superpower.Logical formLearned from7 sentences. A superpower can be in decline.Logical formLearned from7 sentences. Defiance can be against a superpower.Logical formLearned from7 sentences. A world can be with a superpower.Logical formLearned from7 sentences. A commander can be in chief of a superpower.Logical formLearned from7 sentences. Rivalry can be between some superpowers.Logical formLearned from7 sentences. A superpower may be left in the world.Logical formLearned from7 sentences. A threat can be from a superpower.Logical formLearned from7 sentences. A (superpower summit) can be with soviet leader.Logical formLearned from7 sentences. A superpower can be threatening.Logical formLearned from7 sentences. (Energy superpowers) may pertain-to the world.Logical formLearned from7 sentences. A superpower can be totalitarian.Logical formLearned from7 sentences. A superpower can be with military strength.Logical formLearned from7 sentences.