Question: what type of mass movement is the slumgullion slide
[{'answer': 'a slow moving landslide', 'provenance': [{'wikipedia_id': '39873212', 'title': 'Slumgullion Earthflow', 'start_paragraph_id': 2, 'start_character': 15, 'end_paragraph_id': 2, 'end_character': 38, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '39873212', 'title': 'Slumgullion Earthflow', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 559, 'bleu_score': 0.838455179796404, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8469723843848419119}, 'section': 'Section::::Abstract.'}]}]