Remains may pertain-to a civilization.Logical formLearned from14 sentences. Signals can be from extraterrestrial civilizations.Logical formLearned from14 sentences. Civilization may grow.Logical formLearned from14 sentences. A role can be in civilization.Logical formLearned from14 sentences. A civilization may manifest greatness.Logical formLearned from14 sentences. A struggle can be between civilization.Logical formLearned from14 sentences. Ancient civilizations may undergo a rise.Logical formLearned from14 sentences. Western civilization may undergo an evolution.Logical formLearned from14 sentences. A civilization may pertain-to a white man.Logical formLearned from14 sentences. Civilization may undergo a renewal.Logical formLearned from14 sentences. Civilizations can be rich.Logical formLearned from14 sentences. Civilization may be born.Logical formLearned from14 sentences. An introduction can be to civilization.Logical formLearned from14 sentences. Creatures may build civilizations.Logical formLearned from14 sentences. A line can be between civilization.Logical formLearned from14 sentences.