Parse this person name:

Gustav Krause, 1703-1777, flourished 1731-1754
user
first_name: Gustav
last_name: Krause
middle_names: []
temporal:
- start: 1703
  end: 1777
  type: life_span
- start: 1731
  end: 1754
  type: flourished
titles: []
extra_info: []
assistant