A threat can be to a civilization.Logical formLearned from13 sentences. A (material civilization) can be socialist.Logical formLearned from13 sentences. A country can be with a civilization.Logical formLearned from13 sentences. A civilization can be advanced.Logical formLearned from13 sentences. A view may show civilization.Logical formLearned from13 sentences. Civilizations can be black.Logical formLearned from13 sentences. A civilization can be on a planet.Logical formLearned from13 sentences. Threats can be to civilization.Logical formLearned from13 sentences. Civilizations can be successful.Logical formLearned from13 sentences. A collapse may pertain-to a civilization.Logical formLearned from13 sentences. Civilization can be civilized.Logical formLearned from13 sentences. Civilization may undergo refinements.Logical formLearned from13 sentences. A clash can be between civilization.Logical formLearned from13 sentences. A civilization can be cosmopolitan.Logical formLearned from13 sentences. A quality may pertain-to a civilization.Logical formLearned from13 sentences.