With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Christoph Waltz is an Austrian-German citizen.
text_B: Concierto Barroco is a piece of music written in 2007 by the Bulgarian composer Gheorghi Arnaoudov , scored for violin and orchestra .. composer. composer. Gheorghi Arnaoudov. Gheorghi Arnaoudov. violin. violin. orchestra. orchestra
not_related.