With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Volleyball is an activity.
text_B: Balcony Bridge is a natural arch in the U.S. state of California .. natural arch. natural arch. U.S. state. U.S. state. California. California. It is located in Siskiyou County .. Siskiyou County. Siskiyou County, California
not_related.