Parse this person name:

Sjoerd B. Schatteleijn, Leimuiderbrug, flourished 1921-1948
user
first_name: Sjoerd
last_name: Schatteleijn
middle_names:
- B.
temporal:
- start: 1921
  end: 1948
  type: flourished
titles: []
extra_info:
- Leimuiderbrug
assistant