Parse this person name:

Sven Losekann (1809-1850, flourished 1833-1845)
user
first_name: Sven
last_name: Losekann
middle_names: []
temporal:
- start: 1809
  end: 1850
  type: life_span
- start: 1833
  end: 1845
  type: flourished
titles: []
extra_info: []
assistant