With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Penny Dreadful has the Bram Stoker character Abraham Van Helsing.
text_B: Jean Leurechon -LRB- 1591 -- 1670 -RRB- was a French Jesuit priest and mathematician .. He often wrote under the pseudonym Hendrik van Etten .
not_related.