Context: At the funeral of the tenor Adolphe Nourrit in Paris in 1839, Chopin made a rare appearance at the organ, playing a transcription of Franz Schubert's lied Die Gestirne. On 26 July 1840 Chopin and Sand were present at the dress rehearsal of Berlioz's Grande symphonie funèbre et triomphale, composed to commemorate the tenth anniversary of the July Revolution. Chopin was reportedly unimpressed with the composition.

Question: What event were Chopin and Sand at on 26 July 1840?
Answer: Berlioz's Grande symphonie funèbre et triomphale

Question: What anniversary was the July Revolution that Sand and Chopin were present at a dress rehearsal for?
Answer: tenth

Question: At whose funeral did Chopin play in 1839?
Answer: Adolphe Nourrit

Question: What instrument did Chopin play at  Adolphe Nourrit's funeral?
Answer: organ

Question: What piece did Chopin play at  Adolphe Nourrit's funeral?
Answer: Franz Schubert's lied Die Gestirne

Question: Chopin attended the funeral of who in 1839?
Answer: Adolphe Nourrit

Question: What did Chopin play at the funeral?
Answer: Franz Schubert's lied Die Gestirne.

Question: What was the dress rehearsal for?
Answer: Berlioz's Grande symphonie funèbre et triomphale

Question: It was in commemoration of the tenth anniversary of what?
Answer: the July Revolution.