With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Jim Henson was an American.
text_B: Sheen T. Kassouf -LRB- 1929 -- 2006 -RRB- was an economist known for research in financial mathematics .. financial mathematics. financial mathematics. Kassouf received a PhD in Economics from Columbia University -LRB- 1965 -RRB- and was later Professor of Economics at University of California Irvine .. PhD. PhD. Columbia University. Columbia University. University of California Irvine. University of California Irvine. Together with Edward O. Thorp he wrote the book Beat the Market in 1967 .. Edward O. Thorp. Edward O. Thorp
not_related.