Parse this person name:

Isaac Hansen, 1913-1991, flourished 1942-1961
user
first_name: Isaac
last_name: Hansen
middle_names: []
temporal:
- start: 1913
  end: 1991
  type: life_span
- start: 1942
  end: 1961
  type: flourished
titles: []
extra_info: []
assistant