问题: 属于云南省的免费游玩景点都有什么？
Cypher查询:
match (:ENTITY{name:'云南省'})<-[:Relationship{name:'所属城市'}]-(m), (m)-[:Relationship{name:'门票价格'}]->(n) where n.name='免费' return distinct m.name
查询结果:
三江并流