With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Abu Bakr al-Baghdadi was accused of enslaving an American citizen.
text_B: Kim Bong-han -LRB- ; born 1916 -RRB- is a North Korean medical surgeon at Pyongyang Medical University and Kyung-Rak institute -LRB- KRI -RRB- .. Pyongyang Medical University. Pyongyang Medical University. He is primarily known for his research on a proposed mechanism for acupuncture that was not accepted by the mainstream medical community that has come to be called the `` primo-vascular system '' .. He received the People 's Prize for his research .. In 1966 the Kyung-Rak institute was closed , and Kim disappeared .
not_related.