Parse this person name:

Mesut Kühnert (1276-1345, flourished 1298-1318)
user
first_name: Mesut
last_name: Kühnert
middle_names: []
temporal:
- start: 1276
  end: 1345
  type: life_span
- start: 1298
  end: 1318
  type: flourished
titles: []
extra_info: []
assistant