Parse this person name:

ثامر فصيل, 1812-1857, flourished 1827-1848
user
first_name: ثامر
last_name: فصيل
middle_names: []
temporal:
- start: 1812
  end: 1857
  type: life_span
- start: 1827
  end: 1848
  type: flourished
titles: []
extra_info: []
assistant