With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The International Space Station does not serve as a research laboratory.
text_B: Somerset Township is a township in Mercer County , in the U.S. state of Missouri .. township. civil township. Mercer County. Mercer County, Missouri. U.S. state. U.S. state. Missouri. Missouri. Somerset Township was established in 1857 , and named after an old variant name of the community of Cleopatra , Missouri .. Missouri. Missouri
not_related.