Parse this person name:

Youssef van Gemert, 1476-1551, flourished 1491-1516
user
first_name: Youssef
last_name: van Gemert
middle_names: []
temporal:
- start: 1476
  end: 1551
  type: life_span
- start: 1491
  end: 1516
  type: flourished
titles: []
extra_info: []
assistant