A planet may undergo a civilization.Logical formLearned from9 sentences. A civilization can be elaborate.Logical formLearned from9 sentences. A civilization can be in an area.Logical formLearned from9 sentences. A civilization can be orthodox.Logical formLearned from9 sentences. A civilization may undergo an establishment.Logical formLearned from9 sentences. Civilization can be in a continental-region.Logical formLearned from9 sentences. A civilization may undergo a flowering.Logical formLearned from9 sentences. An era may undergo civilizations.Logical formLearned from9 sentences. A civilization can be old-world.Logical formLearned from9 sentences. Civilizations may undergo an understanding.Logical formLearned from9 sentences. A place can be in a civilization.Logical formLearned from9 sentences. Progress may pertain-to civilization.Logical formLearned from9 sentences. Civilizations can be prominent.Logical formLearned from9 sentences. A war can be a clash of civilizations.Logical formLearned from9 sentences. A clash of civilizations may dominate global politics.Logical formLearned from9 sentences.