Please answer the following question: What type of details about dirk i , count of holland can be gathered from the following bio? Bio: dirk i -lrb- '' theoderic '' -rrb- was count of holland , thought to have been in office from ca. 896 to ca. 928 or 939 .
A:
- issue - title - caption - reign - successor - spouse - predecessor - death date - father - birth date - name - image