With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Roman Atwood is American.
text_B: The Stolper -- Samuelson theorem is a basic theorem in Heckscher -- Ohlin trade theory .. theorem. theorem. trade. trade. It describes the relationship between relative prices of output and relative factor rewards -- specifically , real wages and real returns to capital .. factor. Factors of production. real. Real versus nominal value ( economics ). The theorem states that -- under specific economic assumptions -LRB- constant returns to scale , perfect competition , equality of the number of factors to the number of products -RRB- -- a rise in the relative price of a good will lead to a rise in the return to that factor which is used most intensively in the production of the good , and conversely , to a fall in the return to the other factor .. theorem. theorem. factor. Factors of production. economic. economic. returns to scale. returns to scale. perfect competition. perfect competition. factors. Factors of production. relative price. relative price
not_related.