Parse this person name:

عبد الغني مهنا (1759-1821, flourished 1776-1804)
user
first_name: عبد الغني
last_name: مهنا
middle_names: []
temporal:
- start: 1759
  end: 1821
  type: life_span
- start: 1776
  end: 1804
  type: flourished
titles: []
extra_info: []
assistant