Complex sentence: Moulton graduated from Phillips Academy in 1997 and went on to attend Harvard University, earning his Bachelor of Science in physics in 2001 and gave the Undergraduate English Oration at his commencement address, of which he focused on the importance of service.
Split into simpler sentences: Moulton graduated from Phillips Academy in 1997 and went on to attend Harvard University, earning his Bachelor of Science in physics in 2001. He gave the Undergraduate English Oration at his commencement address, focusing on the importance of service.