How many movies has Quentin Tarantino directed?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q459290', 'id': 0, 'label': 'independent film'}, {'type': 'INTERNAL', 'name_': 'Q212026', 'id': 1, 'label': 'Mira Sorvino'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q3772', 'id': 2, 'label': 'Quentin Tarantino'}, {'type': 'INTERNAL', 'name_': 'Q27959202', 'id': 3, 'label': 'Indiscretion'}], 'links': [{'name_': 'P451', 'source': 1, 'target': 2, 'label': 'unmarried partner'}, {'name_': 'P136', 'source': 3, 'target': 0, 'label': 'genre'}, {'name_': 'P161', 'source': 3, 'target': 1, 'label': 'cast member'}]}