Mrs Kelly was chief executive and managing director of St George Bank from 2002 to 2007 and CEO of Westpac from 2008 until early this year, overseeing a merger of the two banks in 2008.
Refer to the input text as context and select the correct relationship between 'St George Bank' and 'Westpac' from the available options.
Options: location of formation, parent organization, stock exchange, position held