Utilize the input text as a context reference, choose the right relationship between 'Boeing' and 'Dennis Muilenburg' from the options.
Options: brand, chief executive officer, original broadcaster, product/material produced

But, with Alibaba's Jack Ma sitting on his left and Boeing (NYSE: BA - news ) chief Dennis Muilenburg to his right, Xi also pushed for some quid pro quo from his American hosts to help Chinese firms expand in the United States.
chief executive officer