Question: who were vikings and what did they do
[{'answer': 'Norse seafarers', 'provenance': [{'wikipedia_id': '32610', 'title': 'Vikings', 'start_paragraph_id': 1, 'start_character': 13, 'end_paragraph_id': 1, 'end_character': 28, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'raided', 'provenance': [{'wikipedia_id': '32610', 'title': 'Vikings', 'start_paragraph_id': 1, 'start_character': 117, 'end_paragraph_id': 1, 'end_character': 123, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'traded', 'provenance': [{'wikipedia_id': '32610', 'title': 'Vikings', 'start_paragraph_id': 1, 'start_character': 128, 'end_paragraph_id': 1, 'end_character': 134, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '32610', 'title': 'Vikings', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 636, 'bleu_score': 0.705211909782248, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6356654310929807539}, 'section': 'Section::::Abstract.'}]}]