Question: who was involved in the 1938 day of mourning
[{'answer': 'Aboriginal people', 'provenance': [{'wikipedia_id': '2797957', 'title': 'Day of Mourning (Australia)', 'start_paragraph_id': 5, 'start_character': 85, 'end_paragraph_id': 5, 'end_character': 102, 'bleu_score': 1.0, 'section': 'Section::::Organisation.\n'}]}, {'answer': 'non-Indigenous supporters', 'provenance': [{'wikipedia_id': '2797957', 'title': 'Day of Mourning (Australia)', 'start_paragraph_id': 5, 'start_character': 107, 'end_paragraph_id': 5, 'end_character': 132, 'bleu_score': 1.0, 'section': 'Section::::Organisation.\n'}]}, {'provenance': [{'wikipedia_id': '2797957', 'title': 'Day of Mourning (Australia)', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 1211, 'bleu_score': 0.9691734514512681, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17099937879935924306}, 'section': 'Section::::Organisation.\n'}]}]