An alliance can be constituted-of-or-filled-with civilizations.Logical formLearned from53 sentences. Civilization may undergo achievements.Logical formLearned from53 sentences. The world may undergo a civilization.Logical formLearned from53 sentences. A part may pertain-to a civilization.Logical formLearned from52 sentences. A return can be to civilization.Logical formLearned from52 sentences. A civilization may collapse.Logical formLearned from52 sentences. A civilization may pertain-to a female.Logical formLearned from52 sentences. Civilization may undergo an institution.Logical formLearned from51 sentences. A clash can be between civilizations.Logical formLearned from51 sentences. Civilization may undergo an evolution.Logical formLearned from50 sentences. Western civilization may undergo a collapse.Logical formLearned from50 sentences. Civilizations can be urban.Logical formLearned from50 sentences. Civilization may undergo a birth.Logical formLearned from50 sentences. Civilizations can be complex.Logical formLearned from49 sentences. Contact can be with civilization.Logical formLearned from49 sentences.