Question: around what main principle did the know-nothing party organize
[{'answer': 'American nativist', 'provenance': [{'wikipedia_id': '13698725', 'title': 'Know Nothing', 'start_paragraph_id': 1, 'start_character': 118, 'end_paragraph_id': 1, 'end_character': 135, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '13698725', 'title': 'Know Nothing', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 546, 'bleu_score': 0.947703439108541, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10658037822122488034}, 'section': 'Section::::Abstract.'}]}]