St George chief economist Hans Kunnen said prices in most major bond markets were little changed after the comments from US Fed chair Janet Yellen "added no fresh insights into monetary policy thinking", and reiterated a US interest rate rise is likely in 2015.
Utilize the input text as a context reference, choose the right relationship between 'Janet Yellen' and 'economist' from the options.
Options: industry, headquarters location, location of formation, position held