What is the relationship between 'Zulily' and 'e-commerce' in the context of the input sentence.
Options: chief executive officer, industry, distributed by, business division

After a difficult year, we are encouraged to see the team’s hard work to reposition the Zulily business gaining traction, fully by the e-commerce tailwind, reinforcing in our view the fundamental attractiveness of the Zulily value proposition.
industry