Parse this person name:

Heinz Sager (1712-1782, flourished 1735-1760)
user
first_name: Heinz
last_name: Sager
middle_names: []
temporal:
- start: 1712
  end: 1782
  type: life_span
- start: 1735
  end: 1760
  type: flourished
titles: []
extra_info: []
assistant