Utilize the input text as a context reference, choose the right relationship between 'Boeing' and 'Dennis Muilenburg' from the options.
Options: location of formation, chief executive officer, owned by, operator

SEATTLE (Reuters) - Boeing Co Chief Executive Dennis Muilenburg said on Tuesday he sees scope for additional 737 work going to China as the company continues to increase production rates of the single-aisle jetliner.
chief executive officer