With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Joey Graceffa worked with a website focused on stem cell technology.
text_B: Małgorzata Chojnacka -LRB- born February 17 , 1983 in Gorzow Wielkopolski -RRB- is a Polish sprint canoer who has competed since the late 2000s .. Gorzow Wielkopolski. Gorzow Wielkopolski. Polish. Poland. sprint canoer. canoe racing. She won a complete set of medals at the ICF Canoe Sprint World Championships with a gold -LRB- K-2 1000 m  : 2009 -RRB- , a silver -LRB- K-2 1000 m  : 2007 -RRB- , and a bronze -LRB- K-4 500 m  : 2007 -RRB- .. ICF Canoe Sprint World Championships. ICF Canoe Sprint World Championships. 2009 ICF Canoe Sprint World Championships. 2007 ICF Canoe Sprint World Championships. Chojnacka also competed in the K-1 500 m event at the 2008 Summer Olympics in Beijing , but was eliminated in the semifinals .. K-1 500 m. Canoeing at the 2008 Summer Olympics – Women's K-1 500 metres. 2008 Summer Olympics. 2008 Summer Olympics. Beijing. Beijing
not_related.