How many games take place before Lufia I?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q17', 'id': 0, 'label': 'Japan'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q6143748', 'id': 1, 'label': 'Lufia II: Rise of the Sinistrals'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q2637335', 'id': 2, 'label': 'Lufia & the Fortress of Doom'}], 'links': [{'name_': 'P495', 'source': 1, 'target': 0, 'label': 'country of origin'}, {'name_': 'P495', 'source': 2, 'target': 0, 'label': 'country of origin'}]}