With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The school that employs Albus Dumbledore is fictional.
text_B: Keeler Creek is a tributary of the Susquehanna River in Wyoming County , Pennsylvania , in the United States .. tributary. tributary. Susquehanna River. Susquehanna River. It is approximately 2.0 mi long and flows through Falls Township .. Falls Township. Falls Township, Wyoming County, Pennsylvania. The watershed of the creek has an area of 1.86 sqmi .. The stream is not designated as an impaired waterbody .. Its drainage basin is a Coldwater Fishery and a Migratory Fishery .
not_related.