How many playable characters are in the original Mortal Kombat game?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q241163', 'id': 0, 'label': 'Mortal Kombat'}, {'type': 'INTERNAL', 'name_': 'Q150294', 'id': 1, 'label': 'Mortal Kombat'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q1653903', 'id': 2, 'label': 'Sonya Blade'}], 'links': [{'name_': 'P179', 'source': 1, 'target': 0, 'label': 'part of the series'}, {'name_': 'P674', 'source': 1, 'target': 2, 'label': 'characters'}]}