A rest of the world may learn a lesson.Logical formLearned from13 sentences. Lessons can be rigorous.Logical formLearned from13 sentences. Lessons can be extended.Logical formLearned from13 sentences. A (life lesson) can be for a person.Logical formLearned from13 sentences. A lesson can be on a computer.Logical formLearned from13 sentences. (Singing lessons) may pertain-to a male.Logical formLearned from13 sentences. Lessons can be guided.Logical formLearned from13 sentences. A person may do a lesson.Logical formLearned from13 sentences. A (reading lesson) can be guided.Logical formLearned from13 sentences. A lesson may undergo an introduction.Logical formLearned from13 sentences. Persons may apply lessons.Logical formLearned from13 sentences. An array can be constituted-of-or-filled-with lessons.Logical formLearned from13 sentences. A lesson of a study can be that something-is-the-case.Logical formLearned from13 sentences. Lessons may have implications.Logical formLearned from13 sentences. Lessons may pertain-to a next day.Logical formLearned from13 sentences.