What is the fine-grained topic of the following text: Classic books previously studied by Gen included La Suite Francaise by Irene Nemirovsky, Le Perre Goriot by Honoré de Balzac, La Bete Humain by Emile Zola, and Les Miserables by Victor Hugo, which inspired a class trip to watch the West End musical. Only return the topic.
Gen studying classic French literature