How many Spyro games were on the original PlayStation?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q10929058', 'id': 0, 'label': 'model'}, {'type': 'INTERNAL', 'name_': 'Q5014725', 'id': 1, 'label': 'PlayStation 4'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q10677', 'id': 2, 'label': 'PlayStation'}, {'type': 'INTERNAL', 'name_': 'Q188642', 'id': 3, 'label': 'Game Boy Advance'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q927422', 'id': 4, 'label': 'Spyro'}, {'type': 'INTERNAL', 'name_': 'Q2569862', 'id': 5, 'label': 'Spyro 2: Season of Flame'}, {'type': 'INTERNAL', 'name_': 'Q51525001', 'id': 6, 'label': 'Spyro Reignited Trilogy'}, {'type': 'INTERNAL', 'name_': 'Q56668812', 'id': 7, 'label': 'PlayStation Classic'}], 'links': [{'name_': 'P31', 'source': 1, 'target': 0, 'label': 'instance of'}, {'name_': 'P31', 'source': 3, 'target': 0, 'label': 'instance of'}, {'name_': 'P400', 'source': 5, 'target': 3, 'label': 'platform'}, {'name_': 'P179', 'source': 5, 'target': 4, 'label': 'part of the series'}, {'name_': 'P400', 'source': 6, 'target': 1, 'label': 'platform'}, {'name_': 'P179', 'source': 6, 'target': 4, 'label': 'part of the series'}, {'name_': 'P31', 'source': 7, 'target': 0, 'label': 'instance of'}, {'name_': 'P144', 'source': 7, 'target': 2, 'label': 'based on'}]}