Question: who plays batman in the new justice league
[{'answer': 'Ben Affleck', 'provenance': [{'wikipedia_id': '44120383', 'title': 'Justice League (film)', 'start_paragraph_id': 1, 'start_character': 360, 'end_paragraph_id': 1, 'end_character': 371, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '44120383', 'title': 'Justice League (film)', 'start_paragraph_id': 31, 'start_character': 0, 'end_paragraph_id': 31, 'end_character': 1633, 'bleu_score': 0.947761448292271, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5340897371245018753}, 'section': 'Section::::Production.:Background.\n'}]}]