With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Philadelphia is the origin of the United States Marine Corps.
text_B: Magdalena `` Leni '' Lohmar -LRB- later Henze -RRB- -LRB- October 19 , 1914 -- December 31 , 2006 -RRB- was a German swimmer who competed in the 1936 Summer Olympics .. German. Germany. 1936 Summer Olympics. 1936 Summer Olympics. In the 1936 Olympics she won a silver medal in the 4 × 100 m freestyle relay event .. She was also fourth in her first round heat of 100 m freestyle event and did not advance .
not_related.