Question: What key details about henry of langenstein  can be extracted from the following bio?  Bio: henry of langenstein , also known as henry of hesse the elder -lrb- c. 1325 -- 11 february 1397 -rrb- was a german scholastic philosopher , theologian and mathematician .
Answer:
- doctoral students is johannes von gmunden- death date is 11 february 1397- field is astronomy- doctoral advisor is '' unknown ''- birth date is ca. 1325- name is henry of langenstein- nationality is german- death place is vienna- birth place is hainbuch near langenstein- alma mater is université de paris