In the context of the input sentence, determine the relationship between 'Goldman Sachs' and 'Lloyd Blankfein'.
Options: chief executive officer, owned by, business division, developer

Federal Reserve Chairwoman Janet Yellen last week referred to concerns about the "deftness" of China's response to downside risks, while Goldman Sachs Chief Executive Officer Lloyd Blankfein called the handling of its stock market collapse "ham-handed."
chief executive officer