How many Olympic medals does Kerri Walsh Jennings have?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q40970', 'id': 0, 'label': 'International Olympic Committee'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q636830', 'id': 1, 'label': 'Olympic medal'}, {'type': 'INTERNAL', 'name_': 'Q977229', 'id': 2, 'label': "beach volleyball at the 2008 Summer Olympics – women's tournament"}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q232666', 'id': 3, 'label': 'Kerri Walsh Jennings'}, {'type': 'INTERNAL', 'name_': 'Q1065654', 'id': 4, 'label': "beach volleyball at the 2012 Summer Olympics – women's tournament"}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q12042581', 'id': 5, 'label': 'Olympic award'}], 'links': [{'name_': 'P1027', 'source': 1, 'target': 0, 'label': 'conferred by'}, {'name_': 'P279', 'source': 1, 'target': 5, 'label': 'subclass of'}, {'name_': 'P1346', 'source': 2, 'target': 3, 'label': 'winner'}, {'name_': 'P156', 'source': 2, 'target': 4, 'label': 'followed by'}, {'name_': 'P664', 'source': 4, 'target': 0, 'label': 'organizer'}, {'name_': 'P155', 'source': 4, 'target': 2, 'label': 'follows'}, {'name_': 'P1027', 'source': 5, 'target': 0, 'label': 'conferred by'}]}