Parse this person name:

Juliana Löwer (1807-1855, flourished 1828-1850)
user
first_name: Juliana
last_name: Löwer
middle_names: []
temporal:
- start: 1807
  end: 1855
  type: life_span
- start: 1828
  end: 1850
  type: flourished
titles: []
extra_info: []
assistant