Who is the youngest Olympic medalist?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q58825429', 'id': 0, 'label': 'Olympic competitor'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q58826204', 'id': 1, 'label': 'Olympic medalist'}, {'type': 'INTERNAL', 'name_': 'Q6432394', 'id': 2, 'label': 'Category:Olympic medalists for the British West Indies'}], 'links': [{'name_': 'P971', 'source': 2, 'target': 0, 'label': 'category combines topics'}, {'name_': 'P971', 'source': 2, 'target': 1, 'label': 'category combines topics'}]}