Assertion: graph's node | /r/HasProperty | airport
Facets:
Source sentences:
text: Nodes are airports, intersections, ports, etc.
text: They are used to model real-world systems such as the Internet (each node represents a router and each edge represents a connection between routers); airline connections (each node is an airport and each edge is a flight); or a city road network (each node represents an intersection and each edge represents a block).