With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Richard Nixon's wife was killed on March 16.
text_B: Theodore Dufaure called de Lajarte , -LRB- 10 July 1826 , Bordeaux -- 21 June 1890 , Paris aged 63 -RRB- was a 19th-century French musicologist and librarian .. Bordeaux. Bordeaux. Lajarte is remembered for his position as archivist to the Paris Opera of which he was the second librarian in 1873 , but he also touched on theater .. Paris Opera. Paris Opera. He provided the music for Monsieur de Floridor , one act in two tableaux , lyrics by Nuitter and Trefeu , performed in 1880 at the Opera-Comique with Belhomme -LRB- Mathurin -RRB- , Grivot -LRB- Floridor -RRB- and Mlle Ducasse -LRB- Therese -RRB- .. Nuitter. Charles Nuitter. Trefeu. Etienne Trefeu. Opera-Comique. Opera-Comique. Grivot. Pierre Grivot. In 1886 , he gave the Opera les Jumeaux de Bergame , one-act ballet-pantomime after Florian , by Nuitter and Merante , with Mlle Subra -LRB- Caroline -RRB- , very well received .. Nuitter. Charles Nuitter. Florian. Jean-Pierre Claris de Florian. Merante. Louis-Alexandre Merante. His other works include le Secret de l'Oncle Vincent , Mam 's elle Penelope , le Neveu de Gulliver , le Portrait and le Roi de Carreau .. As a musicologist , he left reductions for piano and singing of old French operas and ballets , overall sixty-two books in nine series under the title Chefs-d'œuvre classiques de l'opera francais .. Lajarte is buried at Montmartre Cemetery .. Montmartre Cemetery. Montmartre Cemetery
not_related.