With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Bosnia and Herzegovina was excluded from being part of the Socialist Federal Republic of Yugoslavia.
text_B: In mathematics , more specifically ring theory and the theory of nil ideals , Levitzky 's theorem , named after Jacob Levitzki , states that in a right Noetherian ring , every nil one-sided ideal is necessarily nilpotent .. mathematics. mathematics. ring theory. ring theory. Jacob Levitzki. Jacob Levitzki. Noetherian ring. Noetherian ring. nilpotent. Nilpotent ideal. Levitzky 's theorem is one of the many results suggesting the veracity of the Kothe conjecture , and indeed provided a solution to one of Kothe 's questions as described in .. Kothe conjecture. Kothe conjecture. The result was originally submitted in 1939 as , and a particularly simple proof was given in .
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