Question: the fastest-growing group among the homeless population in the united states is
[{'answer': 'families with children', 'provenance': [{'wikipedia_id': '667980', 'title': 'Homelessness in the United States', 'start_paragraph_id': 60, 'start_character': 254, 'end_paragraph_id': 60, 'end_character': 276, 'bleu_score': 1.0, 'section': 'Section::::Definitions and categories.\n'}]}]