Complex sentence: Tsujii is a Principal Researcher at Microsoft Research Asia (MSRA), before joining MSRA he was a professor at the University of Tokyo, where he belonged to both the School of Inter-faculty Initiative on Informatics and the Graduate School of Information Science and Technology.
Split into simpler sentences: Tsujii is a Principal Researcher at Microsoft Research Asia (MSRA). Before joining MSRA, he was a professor at the University of Tokyo, where he belonged to both the School of Inter-faculty Initiative on Informatics and the Graduate School of Information Science and Technology.