Question: who discover the occurrence of oil in assam
[{'answer': 'Italian Engineers', 'provenance': [{'wikipedia_id': '1447232', 'title': 'Digboi', 'start_paragraph_id': 5, 'start_character': 191, 'end_paragraph_id': 5, 'end_character': 208, 'bleu_score': 1.0, 'section': 'Section::::Etymology.\n'}]}, {'provenance': [{'wikipedia_id': '1447232', 'title': 'Digboi', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 1526, 'bleu_score': 0.643435935430256, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13338714771108883809}, 'section': 'Section::::Etymology.\n'}]}]