Parse this person name:

Mara van Velzen, 1297-1353, flourished 1318-1346
user
first_name: Mara
last_name: van Velzen
middle_names: []
temporal:
- start: 1297
  end: 1353
  type: life_span
- start: 1318
  end: 1346
  type: flourished
titles: []
extra_info: []
assistant