Utilize the input text as a context reference, choose the right relationship between Tim Armstrong and AOL from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

At the conference last summer, AOL CEO Tim Armstrong sat down with Verizon CEO Lowell McAdam, sewing the seeds for Verizon's $4.4 billion acquisition of AOL.

Answer: employer