Parse this person name:

غالب مهنا (1221-1284, flourished 1251-1264)
user
first_name: غالب
last_name: مهنا
middle_names: []
temporal:
- start: 1221
  end: 1284
  type: life_span
- start: 1251
  end: 1264
  type: flourished
titles: []
extra_info: []
assistant