With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The first Ku Klux Klan died out by the early 1870s in the south.
text_B: U.S. Route 177 is a spur of U.S. Route 77 .. U.S. Route 77. U.S. Route 77. It currently runs for 233 miles -LRB- 375 km -RRB- from South Haven , Kansas at US 81 to Madill , Oklahoma at US-70 .. Oklahoma. Oklahoma. Kansas. Kansas. US 81. U.S. Route 81 ( Kansas ). US-70. U.S. Highway 70 ( Oklahoma ). It passes through the states of Kansas and Oklahoma .. Oklahoma. Oklahoma. Kansas. Kansas
not_related.