Question: what is on a mcchicken sandwich from mcdonalds
[{'answer': 'a toasted wheat bun', 'provenance': [{'wikipedia_id': '975147', 'title': 'McChicken', 'start_paragraph_id': 1, 'start_character': 126, 'end_paragraph_id': 1, 'end_character': 145, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'a breaded chicken patty', 'provenance': [{'wikipedia_id': '975147', 'title': 'McChicken', 'start_paragraph_id': 1, 'start_character': 147, 'end_paragraph_id': 1, 'end_character': 170, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'shredded lettuce', 'provenance': [{'wikipedia_id': '975147', 'title': 'McChicken', 'start_paragraph_id': 1, 'start_character': 172, 'end_paragraph_id': 1, 'end_character': 188, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'mayonnaise', 'provenance': [{'wikipedia_id': '975147', 'title': 'McChicken', 'start_paragraph_id': 1, 'start_character': 194, 'end_paragraph_id': 1, 'end_character': 204, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'toasted wheat bun', 'provenance': [{'wikipedia_id': '975147', 'title': 'McChicken', 'start_paragraph_id': 1, 'start_character': 128, 'end_paragraph_id': 1, 'end_character': 145, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'breaded chicken patty', 'provenance': [{'wikipedia_id': '975147', 'title': 'McChicken', 'start_paragraph_id': 1, 'start_character': 149, 'end_paragraph_id': 1, 'end_character': 170, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'a toasted wheat bun , a breaded chicken patty , shredded lettuce , and mayonnaise'}, {'provenance': [{'wikipedia_id': '975147', 'title': 'McChicken', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 204, 'bleu_score': 0.8866029039778041, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 251463065612469653}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '975147', 'title': 'McChicken', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The sandwich consists of a toasted wheat bun, a breaded chicken patty, shredded lettuce, and mayonnaise.', "The McChicken is a chicken sandwich sold by the international fast food restaurant chain McDonald's. The sandwich consists of a toasted wheat bun, a breaded chicken patty, shredded lettuce, and mayonnaise.", "The McChicken is a chicken sandwich sold by the international fast food restaurant chain McDonald's. The sandwich consists of a toasted wheat bun, a breaded chicken patty, shredded lettuce, and mayonnaise."]}}]}]