Question: kangaroos koalas and possums belong to what mammal group
[{'answer': 'Marsupials', 'provenance': [{'wikipedia_id': '20205', 'title': 'Marsupial', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '20205', 'title': 'Marsupial', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 417, 'bleu_score': 0.87540210596635, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3844247383115272457}, 'section': 'Section::::Abstract.'}]}]