With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Leslie Uggams was in a 2016 American film.
text_B: Bela Bartok 's Piano Concerto No. 2 in G major , Sz .. Bela Bartok. Bela Bartok. 95 , BB 101 -LRB- 1930 -- 31 -RRB- is the second of three piano concerti , and is notorious for being one of the most difficult pieces in the repertoire .
not_related.