Context: In parallel, however, the 19th century saw a Catalan literary revival (Renaixença), which has continued up to the present day. This period starts with Aribau's Ode to the Homeland (1833); followed in the second half of the 19th century, and the early 20th by the work of Verdaguer (poetry), Oller (realist novel), and Guimerà (drama).

Question: What did the 19th century produce in Catalan literature?
Answer: revival

Question: What is Renaixenca?
Answer: Catalan literary revival

Question: When did Aribau write Ode to the Homeland?
Answer: 1833

Question: When did this revival period begin?
Answer: 1833

Question: In what century did Vedaguer, Oller, and Guimera wrte?
Answer: early 20th