What percentage of all UNHCR speeches in the dataset were delivered by Sadako Ogata?

What percentage of all UNHCR speeches in the dataset were delivered by Sadako Ogata?: a task in SmolDataEnvs-harbor-train-sandbox: 📊 SmolDataEnvs: Harbor (train) (Harbor dataset). Files (in /home/user/input, no subfolders): - speeches.json