A civilization can be on a planet.Logical formLearned from11 sentences. A danger can be to civilization.Logical formLearned from11 sentences. A civilization may undergo an expansion.Logical formLearned from11 sentences. A civilization can be agrarian.Logical formLearned from11 sentences. Human civilization may undergo an evolution.Logical formLearned from11 sentences. Contact can be with an extraterrestrial civilization.Logical formLearned from11 sentences. A civilization may undergo an achievement.Logical formLearned from11 sentences. Civilizations may undergo an evolution.Logical formLearned from11 sentences. A human civilization can be advanced.Logical formLearned from11 sentences. Ideas can be constituted-of-or-filled-with civilization.Logical formLearned from11 sentences. Some traces can be constituted-of-or-filled-with civilization.Logical formLearned from11 sentences. A defense can be constituted-of-or-filled-with civilization.Logical formLearned from11 sentences. A battle can be for civilization.Logical formLearned from11 sentences. A civilization can be just.Logical formLearned from11 sentences. Differences can be among civilizations.Logical formLearned from11 sentences.