Ключевые слова: adult, african, american, ask, backpack, book, campus, casual, caucasian, classmate, college, communication, day, discussing, discussion, education, female, five, friend, girl, grad, help, holding, learning, leisure, looking, male, man, men, mid, multiethnic, notes, outdoor, people, person, prof, professor, question, senior, smile, student, teacher, together, university, walk, woman, women, young,