The company has been outperforming rivals such as Yum Brands Inc's (YUM.N) Pizza Hut and McDonald's Corp (MCD.N) in the United States due to the digital investments, which make it easier for customers to order pizzas using methods such as smart watches and digital wallets.
What is the relationship between 'Yum Brands' and 'Pizza Hut' in the context of the input sentence.
Options: chairperson, owner of, member of, platform