With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: A mixtape is a home-made compilation of music traditionally recorded onto a cassette tape.
text_B: The Rose City Golf Clubhouse is a building located in northeast Portland , Oregon , listed on the National Register of Historic Places .. National Register of Historic Places. National Register of Historic Places. The building was listed October 31 , 2012 .
not_related.