Parse this person name:

Denis Römer (1713-1787, flourished 1740-1754)
user
first_name: Denis
last_name: Römer
middle_names: []
temporal:
- start: 1713
  end: 1787
  type: life_span
- start: 1740
  end: 1754
  type: flourished
titles: []
extra_info: []
assistant