Parse this person name:

Liv van Soest, 1302-1375, flourished 1321-1341
user
first_name: Liv
last_name: van Soest
middle_names: []
temporal:
- start: 1302
  end: 1375
  type: life_span
- start: 1321
  end: 1341
  type: flourished
titles: []
extra_info: []
assistant