Refer to the input text as context and select the correct relationship between 'Janet Yellen' and 'economist' from the available options.
Options: location of formation, chief executive officer, subsidiary, position held

Kevin Lamarque | Reuters Janet Yellen "A weaker-than-expected rise in consumer prices at the start of Q3 further fuels the dovish argument for the Fed to remain on the sideline, delaying liftoff beyond the September FOMC meeting," Lindsey Piegza, chief economist at Stifel Fixed Income, said in a note.
position held