Olga Prokhorova () is a Russian retired swimmer. Complete the following sentence: <unk><unk><unk><unk><unk><unk><unk><unk><unk><unk><unk><unk><unk><unk><unk><unk><unk><unk>
1993 European Aquatics Championships in the 4 × 100 m medley relay.<unk>1993 European Aquatics Championships in the 4 × 100 m medley relay.