Parse this person name:

عثمان T. مَسعد R. الجابر, died 1240
user
first_name: عثمان
last_name: الجابر
middle_names:
- T.
- مَسعد
- R.
temporal:
- start: null
  end: 1240
  type: life_span
titles: []
extra_info: []
assistant