Question: when was the river and the source published
[{'answer': '1995', 'provenance': [{'wikipedia_id': '3568427', 'title': 'Margaret Ogola', 'start_paragraph_id': 1, 'start_character': 334, 'end_paragraph_id': 1, 'end_character': 338, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3568427', 'title': 'Margaret Ogola', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 354, 'bleu_score': 0.9669306597086381, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1100155438291252232}, 'section': 'Section::::Writings.\n'}]}]