The president of South Korea was recently seen in San Francisco, visiting Pier 39. He is in town to attend an AI summit, which has brought together major tech companies and business leaders to discuss innovation in the field of artificial intelligence. Further details about the summit are available from NVIDIA, one of the participating tech giants.

The president's visit has also resulted in a significant partnership with a Silicon Valley tech company, valued at $500 billion. For more information about the AI summit and the president's visit, readers can refer to the original source, which may provide additional details and updates on the partnership and the summit's discussions.