With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Emmy Rossum starred in television shows.
text_B: John M. Krum -LRB- 1810 -- 1883 -RRB- was the 11th mayor of St. Louis , Missouri and the first mayor of Alton , Illinois .. In 1860 he was the chairman of the Credentials Committee at the Democratic National Convention held in Charleston , S.C. and Baltimore , Md. .. Democratic National Convention. 1860 Democratic National Convention
not_related.