With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Matt Damon portrayed Scott Thorson in a movie.
text_B: This list of tallest buildings in Louisville ranks skyscrapers in the United States city of Louisville , Kentucky by height .. The tallest building in the city is 400 West Market , which rises 167 meters / 550 feet .. 400 West Market. 400 West Market. It was completed in 1993 .. TOC
not_related.