With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Rihanna is one of the best-selling artists of the 21st century.
text_B: Oscar Gjøslien -LRB- November 9 , 1909 -- May 20 , 1995 -RRB- was a Norwegian cross-country skier who competed during the 1930s .. Norwegian. Norway. cross-country skier. cross-country skier. He won a bronze medal at the 1939 FIS Nordic World Ski Championships in the 50 km .. 1939 FIS Nordic World Ski Championships. 1939 FIS Nordic World Ski Championships. In 1935 , Gjøslien won the 50 km cross-country skiing event at the Holmenkollen ski festival .. Holmenkollen. Holmenkollen. cross-country skiing. cross-country skiing. Holmenkollen ski festival. Holmenkollen ski festival. Because of his successes , Gjøslien was awarded the Holmenkollen medal in 1940 -LRB- shared with Annar Ryen -RRB- .. Holmenkollen. Holmenkollen. Holmenkollen medal. Holmenkollen medal. Annar Ryen. Annar Ryen
not_related.