Question: who was regarded as war god of rigveda
[{'answer': 'Indra', 'provenance': [{'wikipedia_id': '5017842', 'title': 'Rigvedic deities', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 5, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5017842', 'title': 'Rigvedic deities', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 233, 'bleu_score': 0.9517713210466091, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8076966829350932709}, 'section': 'Section::::Abstract.'}]}]