Conversation so far:
What was Marissa Mayer's relationship with Google?
Marissa Mayer joined Google in 1999 as employee number 20.
What was Marissa Mayer's position with Google?
Marissa Mayer became known for her attention to detail, which helped land her a promotion to product manager, and later she became director of consumer web products.
Did Marissa Mayer have success as a product manager and later director of consumer web products at Google?
Marissa Mayer was on the three-person team responsible for Google AdWords. AdWords helped deliver 96% of the company's revenue in the first quarter of 2011.
What did Marissa Mayer get promoted to at Google after becoming director of consumer web products?
Marissa Mayer became Vice President of Search Products and User Experience.
What year did Marissa Mayer get promoted to Vice President of Search Products and User Experience?
In 2005, Marissa Mayer became Vice President of Search Products and User Experience.

Question: How long did she work for Google?
Self-contained rewrite: How long did Marissa Meyer work for Google?