Parse this person name:

Heinz-Gerd Martin, 1691-1760, flourished 1718-1740
user
first_name: Heinz-Gerd
last_name: Martin
middle_names: []
temporal:
- start: 1691
  end: 1760
  type: life_span
- start: 1718
  end: 1740
  type: flourished
titles: []
extra_info: []
assistant