Complex sentence: Toh is considered one of the founding fathers of modern Singapore that along with Lee Kuan Yew, Goh Keng Swee and S. Rajaratnam led Singapore during its formative years.
Split into simpler sentences: Toh is considered one of founding fathers of modern Singapore. Together with Lee Kuan Yew, Goh Keng Swee and S. Rajaratnam, Toh was part of a group that led Singapore during its formative years.