Question: what does dc stand for in dungeons and dragons
[{'answer': 'difficulty class', 'provenance': [{'wikipedia_id': '3853089', 'title': 'Dungeons & Dragons gameplay', 'start_paragraph_id': 75, 'start_character': 69, 'end_paragraph_id': 75, 'end_character': 85, 'bleu_score': 1.0, 'section': 'Section::::Skills.\n'}]}, {'provenance': [{'wikipedia_id': '3853089', 'title': 'Dungeons & Dragons gameplay', 'start_paragraph_id': 75, 'start_character': 0, 'end_paragraph_id': 75, 'end_character': 371, 'bleu_score': 0.9716239638199891, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8699634401449216029}, 'section': 'Section::::Skills.\n'}]}]