Question: who was married to each other in abba
[{'answer': 'Fältskog and Ulvaeus', 'provenance': [{'wikipedia_id': '880', 'title': 'ABBA', 'start_paragraph_id': 2, 'start_character': 72, 'end_paragraph_id': 2, 'end_character': 92, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Lyngstad and Andersson', 'provenance': [{'wikipedia_id': '880', 'title': 'ABBA', 'start_paragraph_id': 2, 'start_character': 98, 'end_paragraph_id': 2, 'end_character': 120, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '880', 'title': 'ABBA', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 385, 'bleu_score': 0.7720134221102221, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18239796786681741730}, 'section': 'Section::::Abstract.'}]}]