With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Michael Jackson was a member of Jackson 5.
text_B: Wolfgang Sigl -LRB- born 23 December 1972 in Linz -RRB- is an Austrian rower .. Linz. Linz. He finished fifth in the men 's lightweight double sculls at the 1996 Summer Olympics .. 1996 Summer Olympics. 1996 Summer Olympics
not_related.