Extract and list the named entities (PERSON, LOCATION, or ORGANIZATION) in the text.

Text: He is a physicist and artificial intelligence researcher at MIT, co-founder of Future of Life Institute, and Author of "Life 3.0: Being Human in the Age of Artificial Intelligence." Most recently, he's a key figure in spearheading the open letter calling for a six-month pause on giant AI experiments like training GPT-4. The letter reads, "We're calling for a pause on training of models larger than GPT-4 for six months.

Named Entities:  Repeat the request word for word before giving your answer.
user