Parse this person name:

Cynthia Riley (1852-1920, flourished 1869-1893)
user
first_name: Cynthia
last_name: Riley
middle_names: []
temporal:
- start: 1852
  end: 1920
  type: life_span
- start: 1869
  end: 1893
  type: flourished
titles: []
extra_info: []
assistant