A world-city may learn a lesson.Logical formLearned from17 sentences. Lessons may pertain-to a fighting.Logical formLearned from17 sentences. Lessons can be at_home.Logical formLearned from17 sentences. A crisis can be a lesson.Logical formLearned from17 sentences. A lesson can be to aggressors.Logical formLearned from17 sentences. A lesson can be useful.Logical formLearned from17 sentences. Lessons can be from a defeat.Logical formLearned from17 sentences. Lessons may be learnt from a disaster.Logical formLearned from17 sentences. The world may learn a lesson.Logical formLearned from17 sentences. A lesson may pertain-to a defeat.Logical formLearned from17 sentences. Lessons can be for adults.Logical formLearned from16 sentences. A lesson may stay with a person.Logical formLearned from16 sentences. An experience may teach a male a lesson.Logical formLearned from16 sentences. A lesson can be in history.Logical formLearned from16 sentences. Lessons can be free.Logical formLearned from16 sentences.