Refer to the input text as context and select the correct relationship between 'Marissa Mayer' and 'Yahoo' from the available options.
Options: stock exchange, location of formation, currency, employer

Enderle said Yahoo (Hanover: YHO.HA - news ) 's decision to lure Marissa Mayer from Google to be CEO has failed to deliver the results many had hoped for and that she has become "an example of what not to do."
employer