With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Gwen Stefani was in Fall Out Boy.
text_B: Boulguin is a town in the Rollo Department of Bam Province in northern Burkina Faso .. Province. Provinces of Burkina Faso. Bam Province. Bam Province. Department. Departments of Burkina Faso. Rollo Department. Rollo Department. Burkina Faso. Burkina Faso. It has a population of 1025 .
not_related.