With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Slovakia joined the North American Union.
text_B: The North American Union -LRB- NAU -RRB- is a theoretical economic and political union of Canada , Mexico , and the United States .. Canada. Canada. Mexico. Mexico. United States. United States. The concept is loosely based on the European Union , occasionally including a common currency called the Amero or the North American Dollar .. European Union. European Union. Amero. North American monetary union. A union of the North American continent , sometimes extending to Central and South America , has been the subject of academic concepts for over a century , as well as becoming a common trope in science fiction .. trope. trope ( literature ). science fiction. science fiction. One reason for the difficulty in realizing the concept is that individual developments in each region have failed to prioritize a larger union .. Some form of union has been discussed or proposed in academic , business , and political circles for decades .. However , government officials from all three nations say there are no plans to create a North American Union and that no agreement to do so has been signed .. The formation of a North American Union has been the subject of various conspiracy theories .. conspiracy theories. conspiracy theory
related.