Parse this person name:

Mathijs van Riet-Mercks (1855-1934, flourished 1881-1909)
user
first_name: Mathijs
last_name: van Riet-Mercks
middle_names: []
temporal:
- start: 1855
  end: 1934
  type: life_span
- start: 1881
  end: 1909
  type: flourished
titles: []
extra_info: []
assistant