Take context from the input text and decide on the accurate relationship between 'Boeing' and 'Dennis Muilenburg' from the options provided.
Options: chief executive officer, original broadcaster, product/material produced, brand

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