Question: what are the duties of efcc in nigeria
[{'answer': 'investigates financial crimes', 'provenance': [{'wikipedia_id': '6816435', 'title': 'Economic and Financial Crimes Commission', 'start_paragraph_id': 1, 'start_character': 94, 'end_paragraph_id': 1, 'end_character': 123, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6816435', 'title': 'Economic and Financial Crimes Commission', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 483, 'bleu_score': 0.940033794885305, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2141301844074420688}, 'section': 'Section::::Abstract.'}]}]