问题: 宜宾市与岷江汇合点起点直到湖北省宜昌市的南津关终点的河流叫什么名字？
Cypher查询:
match (:ENTITY{name:'宜宾市与岷江汇合点'})<-[:Relationship{name:'起点'}]-(m), (m)-[:Relationship{name:'终点'}]->(n) where n.name='至湖北省宜昌市的南津关' return distinct m.name
查询结果:
川江[长江上游河段]