Question: What sport became a Winter Olympic Games medal sport in 1976 and what Kati Winkler and her partner Rene Lohse competed twice in at the Winter Olympics, in 1998 and 2002?
Sentence (from "Kati Winkler"): Kati Winkler (born 16 January 1974) is a German former competitive ice dancer.
Relevant evidence: Yes