With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Sports is a popular culture category.
text_B: Elk River is a 34.2 mi stream in Colorado .. Colorado. Colorado. stream. stream. It flows from a confluence of the North Fork Elk River and Middle Fork Elk River in Routt National Forest north of Steamboat Springs to a confluence with the Yampa River .. North Fork. North Fork Elk River. Middle Fork. Middle Fork Elk River. Yampa River. Yampa River. Yampa. Yampa River. North Fork Elk River. North Fork Elk River. Middle Fork Elk River. Middle Fork Elk River. Routt National Forest. Routt National Forest. Steamboat Springs. Steamboat Springs, Colorado
not_related.