Question: who is opening for ed sheeran at oracle arena
[{'answer': 'James Blunt', 'provenance': [{'wikipedia_id': '52992937', 'title': '÷ Tour', 'start_paragraph_id': 3, 'start_character': 666, 'end_paragraph_id': 3, 'end_character': 677, 'bleu_score': 1.0, 'section': 'Section::::Development.\n'}]}]