Question: who has won more old firm games rangers or celtic
[{'answer': 'Rangers', 'provenance': [{'wikipedia_id': '239465', 'title': 'Old Firm', 'start_paragraph_id': 1, 'start_character': 95, 'end_paragraph_id': 1, 'end_character': 102, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]