Which continent does not contain at least 3 countries (not including territorial claims)?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q5107', 'id': 0, 'label': 'continent'}, {'type': 'INTERNAL', 'name_': 'Q46', 'id': 1, 'label': 'Europe'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q6256', 'id': 2, 'label': 'country'}, {'type': 'INTERNAL', 'name_': 'Q48', 'id': 3, 'label': 'Asia'}, {'type': 'INTERNAL', 'name_': 'Q299', 'id': 4, 'label': 'Vidov'}], 'links': [{'name_': 'P1963', 'source': 2, 'target': 4, 'label': 'properties for this type'}, {'name_': 'P31', 'source': 3, 'target': 0, 'label': 'instance of'}, {'name_': 'P47', 'source': 3, 'target': 1, 'label': 'shares border with'}, {'name_': 'P30', 'source': 4, 'target': 1, 'label': 'continent'}]}