Claim: Kornelia Kubińska participated in the FIS Nordic World Ski Championships 2009 (which took place 18 February – 1 March 2009 in Liberec, Czech Republic) at the age of 23 in the Individual 10 km (with a score of 29), the 15 km skiathlon (with a score of 39), the 30 km mass start (with a score of 20) and the sprint (with a score of 66).
Evidence: The FIS Nordic World Ski Championships 2009 (Czech: Mistrovství světa v klasickém lyžování Liberec 2009) took place 18 February – 1 March 2009 in Liberec, Czech Republic. At the FIS Nordic World Ski Championships 2009 in Liberec, Kubińska finished sixth in the 4 × 5 km relay, 21st in the 30 km, 29th in the 10 km, 40th in the 7.5 km + 7.5 km double pursuit, and 66th in the individual sprint events. 2009 23 29 39 20 66