Question: what teams are in the fa cup final
[{'answer': 'Manchester United', 'provenance': [{'wikipedia_id': '56071401', 'title': '2018 FA Cup Final', 'start_paragraph_id': 1, 'start_character': 219, 'end_paragraph_id': 1, 'end_character': 236, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Chelsea', 'provenance': [{'wikipedia_id': '56071401', 'title': '2018 FA Cup Final', 'start_paragraph_id': 1, 'start_character': 241, 'end_paragraph_id': 1, 'end_character': 248, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '56071401', 'title': '2018 FA Cup Final', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 348, 'bleu_score': 0.914208565914368, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12688287890235717147}, 'section': 'Section::::Abstract.'}]}]