Parse this person name:

Greg Graham, 1927-2003, flourished 1945-1958
user
first_name: Greg
last_name: Graham
middle_names: []
temporal:
- start: 1927
  end: 2003
  type: life_span
- start: 1945
  end: 1958
  type: flourished
titles: []
extra_info: []
assistant