GOBO::Node

  printf '%s "%s"', $n->id, $n->label;

 A unit in a graph. The Node class hierarchy:

 * L<GOBO::ClassNode>
 ** L<GOBO::TermNode>
 ** L<GOBO::ClassExpression>
 * L<GOBO::RelationNode>
 * L<GOBO::InstanceNode>

With a simple ontology graph, the core units are TermNodes.

GOBO::Graph