Parse this person name:

Ruben Stephens, 1273-1346, flourished 1293-1318
user
first_name: Ruben
last_name: Stephens
middle_names: []
temporal:
- start: 1273
  end: 1346
  type: life_span
- start: 1293
  end: 1318
  type: flourished
titles: []
extra_info: []
assistant