With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Tokyo is the seat of government of Japan since 1603.
text_B: Springvale is a village and former census-designated place in the city of Sanford in York County , Maine , United States .. United States. United States. Maine. Maine. County. List of counties in Maine. York. York County, Maine. census-designated place. census-designated place. Sanford. Sanford, Maine. York County. York County, Maine. The population was 3,292 at the 2010 census .. 2010 United States Census. 2010 census. 2010 United States Census. It is part of the Portland -- South Portland -- Biddeford , Maine metropolitan statistical area .. Maine. Maine. Portland. Portland, Maine. South Portland. South Portland, Maine. Biddeford. Biddeford, Maine. metropolitan statistical area. Portland-South Portland-Biddeford metropolitan area. The CDP was abolished when the town of Sanford reincorporated as a city .. Sanford. Sanford, Maine
not_related.