With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Marie Curie studied.
text_B: In economics , valuation effects of a country are the changes in the value of assets held abroad , minus the changes in the value of domestic assets held by foreign investors .. economics. economics. The traditional balance of payment identity ignores valuation effects , only recognizes that changes in the net foreign assets -LRB- NFA -RRB- are fully captured by the current account .. balance of payment. balance of payment. net foreign assets. net foreign assets. current account. current account. The new balance of payment identity , however , considers the role of asset price changes and valuation effects .. balance of payment. balance of payment. Changes in the NFA equal the current account plus valuation effects .. current account. current account
not_related.