How many full-length movies has Taika Waititi directed?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q6581097', 'id': 0, 'label': 'male'}, {'type': 'INTERNAL', 'name_': 'Q20970432', 'id': 1, 'label': '4:3'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q202', 'id': 2, 'label': '4'}, {'type': 'INTERNAL', 'name_': 'Q19559892', 'id': 3, 'label': '4mat'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q2388576', 'id': 4, 'label': 'Taika Waititi'}, {'type': 'INTERNAL', 'name_': 'Q67171095', 'id': 5, 'label': 'The Electrical Life of Louis Wain'}], 'links': [{'name_': 'P4934', 'source': 1, 'target': 2, 'label': 'calculated from'}, {'name_': 'P21', 'source': 3, 'target': 0, 'label': 'sex or gender'}, {'name_': 'P138', 'source': 3, 'target': 2, 'label': 'named after'}, {'name_': 'P21', 'source': 4, 'target': 0, 'label': 'sex or gender'}, {'name_': 'P2061', 'source': 5, 'target': 1, 'label': 'aspect ratio (W:H)'}, {'name_': 'P161', 'source': 5, 'target': 4, 'label': 'cast member'}]}