Question: who led the hessians in the battle of trenton
[{'answer': 'Colonel Johann Rall', 'provenance': [{'wikipedia_id': '230033', 'title': 'Battle of Trenton', 'start_paragraph_id': 7, 'start_character': 141, 'end_paragraph_id': 7, 'end_character': 160, 'bleu_score': 1.0, 'section': 'Section::::Background.\n'}]}, {'provenance': [{'wikipedia_id': '230033', 'title': 'Battle of Trenton', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 355, 'bleu_score': 0.963949056609222, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2882927989595395427}, 'section': 'Section::::Background.\n'}]}]