Parse this person name:

Helmar Margraf, 1653-1697, flourished 1677-1692
user
first_name: Helmar
last_name: Margraf
middle_names: []
temporal:
- start: 1653
  end: 1697
  type: life_span
- start: 1677
  end: 1692
  type: flourished
titles: []
extra_info: []
assistant