Question: in drama an extra is a character that is
[{'answer': 'background actor', 'provenance': [{'wikipedia_id': '2576761', 'title': 'Extra (acting)', 'start_paragraph_id': 1, 'start_character': 2, 'end_paragraph_id': 1, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2576761', 'title': 'Extra (acting)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 554, 'bleu_score': 0.9768747032089851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12445462667227505395}, 'section': 'Section::::Abstract.'}]}]