Ключевые слова: adult, background, blackboard, brain, brainstorm, business, businessman, chalk, chalkboard, chart, concept, creative, design, diagram, doodle, drawing, education, european, finance, graph, hand, handsome, idea, innovation, lamp, lightbulb, looking, man, management, plan, portrait, presentation, research, seminar, sketch, solution, standing, startup, storm, strategy, success, suit, technology, thinking, tie, training, tutor, wall, workshop, young,