Parse this person name:

Saar Bastiaense (1435-1496, flourished 1450-1474)
user
first_name: Saar
last_name: Bastiaense
middle_names: []
temporal:
- start: 1435
  end: 1496
  type: life_span
- start: 1450
  end: 1474
  type: flourished
titles: []
extra_info: []
assistant