Question: where is the o2 arena in london located
[{'answer': 'Greenwich Peninsula', 'provenance': [{'wikipedia_id': '9936031', 'title': 'The O2 Arena', 'start_paragraph_id': 1, 'start_character': 98, 'end_paragraph_id': 1, 'end_character': 117, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]