With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Carole King performs surgery.
text_B: The 2017 Columbus Crew SC season will be the club 's twenty-second season of existence , and their twenty-second consecutive season in Major League Soccer , the top flight of American soccer .. Columbus Crew SC. Columbus Crew SC. 2017 Major League Soccer season. Major League Soccer. Major League Soccer
not_related.