In the context of the input sentence, determine the relationship between 'Google search' and 'Sergey Brin'.
Options: brand, creator, chairperson, business division

Alphabet is the name that Larry Page and Sergey Brin have given the newly created parent entity that will house the Google search business and several smaller holdings like Nest, a maker of smart thermostats, and Calico, a company focused on longevity.
creator