source: He received his BA from the University of Chicago in 1989, and his PhD in 1993 at UCLA where his advisor was Basil Gordon.
target: He received his BA from the University of Chicago in 1989. He received his PhD in 1993 at UCLA. At UCLA, his advisor was Basil Gordon.
references: He received his BA from the University of Chicago in 1989. He received his PhD in 1993 at UCLA. At UCLA, his advisor was Basil Gordon.