Parse this person name:

Agnieszka Margraf (1724-1776, flourished 1753-1771)
user
first_name: Agnieszka
last_name: Margraf
middle_names: []
temporal:
- start: 1724
  end: 1776
  type: life_span
- start: 1753
  end: 1771
  type: flourished
titles: []
extra_info: []
assistant