Analyze the relationship between 'go90' and 'Verizon' within the context of the input sentence.
Options: legal form, owned by, manufacturer, location of formation

Publicis Groupe , the world’s third-largest advertising group, has signed on for a yearlong ad partnership with go90 starting next month, said executives at AOL, the Verizon unit which is handing advertising sales for the new service.
owned by