With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Clark Gable was an actor in It Happened One Night.
text_B: Hugo Staehle -LRB- 21 June 1826 -- 29 March 1848 -RRB- was a German composer .. German. Germans. composer. composer. Staehle was a student of Louis Spohr .. Louis Spohr. Louis Spohr. He wrote at least one opera , one symphony -LRB- Symphony no. 1 in C-minor -RRB- , one concert overture , one piano quartet , and a couple of song cycles .. opera. opera. symphony. symphony
not_related.