Parse this person name:

Gunar Sager, 1542-1588, flourished 1566-1583
user
first_name: Gunar
last_name: Sager
middle_names: []
temporal:
- start: 1542
  end: 1588
  type: life_span
- start: 1566
  end: 1583
  type: flourished
titles: []
extra_info: []
assistant