Parse this person name:

Justin Becker (1836-1884, flourished 1859-1872)
user
first_name: Justin
last_name: Becker
middle_names: []
temporal:
- start: 1836
  end: 1884
  type: life_span
- start: 1859
  end: 1872
  type: flourished
titles: []
extra_info: []
assistant