Parse this person name:

Leo Henck (1729-1777, flourished 1750-1772)
user
first_name: Leo
last_name: Henck
middle_names: []
temporal:
- start: 1729
  end: 1777
  type: life_span
- start: 1750
  end: 1772
  type: flourished
titles: []
extra_info: []
assistant