Question: What was the name of the man who played a key role in the development of the reactor the powered the first submarine to complete a submerged transit of the North Pole?
Sentence (from "Zalman Shapiro"): He received 15 patents, including a 2009 patent on a process to make commercial production of diamonds cheaper, and played a key role in the development of the reactor that powered the world's first nuclear powered submarine, the "Nautilus".
Relevant evidence: Yes