Assertion details
Summary
river serve 1 as political boundaries
TEMPORAL
often 1
1 facets
Facet Type Facet cluster
often 1 temporal
1 triples in cluster
river serve as political boundaries 1
1 source sentences
Source: Shown
Subject: Shown
Predicate: Shown
Object: Shown
Facet: Shown
  • SRC Since rivers often serve as political boundaries , confluences sometimes demarcate three abutting political entities , such as nations , states , or provinces , forming a tripoint .