Question: which of the following cities is located in the most densely populated island of indonesia
[{'answer': 'Jakarta', 'provenance': [{'wikipedia_id': '16275', 'title': 'Jakarta', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]