Parse this person name:

Pietro Guglielmi, 1920-1989, flourished 1950-1974
user
first_name: Pietro
last_name: Guglielmi
middle_names: []
temporal:
- start: 1920
  end: 1989
  type: life_span
- start: 1950
  end: 1974
  type: flourished
titles: []
extra_info: []
assistant