Cracks may undergo a formation.Logical formLearned from81 sentences. Formations can be armored.Logical formLearned from81 sentences. The earth may undergo a formation.Logical formLearned from80 sentences. (Rock formations) can be interesting.Logical formLearned from80 sentences. A formation may pertain-to a world-city.Logical formLearned from79 sentences. Authority may undergo a formation.Logical formLearned from79 sentences. A formation can be basic.Logical formLearned from78 sentences. A (working group) may undergo a formation.Logical formLearned from78 sentences. A formation may pertain-to a company.Logical formLearned from77 sentences. A new state may undergo a formation.Logical formLearned from77 sentences. Storms may undergo a formation.Logical formLearned from76 sentences. Militias may undergo a formation.Logical formLearned from76 sentences. A formation can be successful.Logical formLearned from76 sentences. Products may undergo a formation.Logical formLearned from75 sentences. Acid may undergo a formation.Logical formLearned from75 sentences.