Parse this person name:

Leonard Miller (1802-1847, flourished 1825-1842)
user
first_name: Leonard
last_name: Miller
middle_names: []
temporal:
- start: 1802
  end: 1847
  type: life_span
- start: 1825
  end: 1842
  type: flourished
titles: []
extra_info: []
assistant