What is the fine-grained topic of the following text: Aldwinckle moved to Japan for one year where he taught English in Sapporo, Hokkaido, and later spent one year at the Japan Management Academy in Nagaoka, Niigata Prefecture, before returning to complete a Masters of Pacific International Affairs (MPIA) at the University of California, San Diego (UCSD). Only return the topic.
Aldwinckle's teaching experience and education in Japan and the US