Assertion: undirected graph | /r/HasAspect | edge
Facets:
value: for each pair of a station
type: OTHER
value: for a train
type: TRANSITIVE-OBJECT
Source sentences:
text: This problem can be modeled as a dominating set problem in a bipartite graph that has a vertex for each train and each station and an edge for each pair of a station and a train that stops at that station.