claim: Olympic medal designs are chosen every Olympics.
evidence: Rhinanthus -LRB- rattle -RRB- is a genus of annual hemiparasitic herbaceous plants in the family Orobanchaceae , formerly classified in the family Scrophulariaceae .. Orobanchaceae. Orobanchaceae. hemiparasitic. parasitic plant. Scrophulariaceae. Scrophulariaceae. The genus consists of about 30-40 species found in Europe , northern Asia , and North America , with the greatest species diversity -LRB- 28 species -RRB- in Europe .. Europe. Europe. Asia. Asia. North America. North America. Selected species