question: What radical political changes occurred during the 19th century ?
answer: the movements of Philhellenism and the Diafotismos in the 19th century
turker_answer: The movements of Philhellenism and the Diafotismos occurred during the 19th century .
rule-based: The movements of Philhellenism and the Diafotismos in the 19th century occurred during the 19th century .