Complex sentence: It was given to the 28th President of Harvard University, Drew Faust, in 2007, who broke the seal, and found that it contained a letter in which Conant expressed his hopes and fears for the future to his successor.
Split into simpler sentences: It was given to the 28th President of Harvard University, Drew Faust in 2007. She broke the seal, and found that it contained a letter in which Conant expressed his hopes and fears for the future to his successor.