What is the relationship between 'AGCO' and 'Valtra' in the context of the input sentence.
Options: owner of, chief executive officer, product/material produced, business division

AGCO products are sold through five core equipment brands, Challenger ® , Fendt ® , GSI ® , Massey Ferguson ® and Valtra ® and are distributed globally through a combination of approximately 3,100 independent dealers and distributors in more than 140 countries.
owner of