Parse this person name:

Benjamin Lemonnier, 1929-1988, flourished 1956-1973
user
first_name: Benjamin
last_name: Lemonnier
middle_names: []
temporal:
- start: 1929
  end: 1988
  type: life_span
- start: 1956
  end: 1973
  type: flourished
titles: []
extra_info: []
assistant