Google is primarily a search engine, and it works by indexing and ranking web pages to provide with relevant search results (based on its algorithms) rather than correct answers in the sense of definitive, universally true statements. But, apart from that, different people can share the same first and last name. Dorian Nakamoto's full name is "Dorian Prentice Satoshi Nakamoto", so if you ask Google "Who is Satoshi Nakamoto?", that's one of the correct answers, even though it's not the answer you're looking for.