With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Belgium has a highly developed transport network of trains and buses.
text_B: The Chickamauga Coal and Iron Company Coke Ovens are beehive coke ovens that are listed on the National Register of Historic Places in 2009 .. beehive coke ovens. beehive coke ovens. National Register of Historic Places. National Register of Historic Places. According to their NRHP nomination , the coke ovens aresignificant in the context of the mining and coke industry that occurred between 1870 and 1930 in southeast Tennessee and northwest Georgia .. The region was part of the Appalachian coal field that stretched from northern Pennsylvania to central Alabama in the Cumberland Mountains region .. Appalachian coal field. Appalachian coal field. Cumberland Mountains. Cumberland Mountains. This New South industry was initiated when the Nashville and Chattanooga Railroad opened in 1854 . ''. Nashville and Chattanooga Railroad. Nashville and Chattanooga Railroad
not_related.