Complex sentence: He attended Technical University of Delft for his master's degree in physics, graduating in 1983 and he received his masters and PhD in computer science from the University of Toronto in 1985 and 1991 respectively.
Split into simpler sentences: He attended Technical University of Delft, from where he received a master's degree in physics, graduating in 1983. He received his masters and PhD in computer science from the University of Toronto in 1985 and 1991 respectively.