With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Maggie Gyllenhaal acts in dramas.
text_B: Water polo at the 2011 Pan American Games was held from October 23 to October 29 , 2011 , at the Scotiabank Aquatics Center in Guadalajara , Mexico .. Scotiabank Aquatics Center. Scotiabank Aquatics Center. Water polo. Water polo. 2011 Pan American Games. 2011 Pan American Games. Guadalajara. Guadalajara. Mexico. Mexico. Each men 's and women 's team consisted of 13 athletes .. Therefore , a total of 208 athletes competed in water polo at these games .. The winner of each tournament -LRB- the United States -RRB- qualified to compete at the 2012 Summer Olympics in London , Great Britain , while the second through fourth-place finishers in each tournament qualified for the last chance qualifying tournament .. United States. United States. 2012 Summer Olympics. Water polo at the 2012 Summer Olympics. London. London. Great Britain. Great Britain
not_related.