Premise: René Kalmer (born 3 November 1980 in Roodepoort, Gauteng) is a female South African runner who has competed over distances ranging from 800 metres to the marathon. She represented South Africa at the 2008 Summer Olympics, running in the 1500 metres. She then represented South Africa again at the 2012 Summer Olympics, competing in the marathon.
Hypothesis: René Kalmer in 2008 was her only olympics