Ключевые слова: aged, amnesia, balding, beard, book, bow, caucasian, class, college, concept, contemplate, education, educator, ethnic, funny, gentlemen, glasses, guy, hispanic, idea, interpretation, latino, learn, lesson, looking, lost, male, man, mature, memory, message, middle, notion, pen, pencil, pensive, pondering, problem, professor, puzzled, researcher, rethink, school, science, solution, study, teach, teacher, tie, university,