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# graph_get_nodenames(+Graph, -NodeNameArray)

Returns the array of node names

Graph
  a graph structure
NodeNameArray
  array of ground data, usually node names

## Description

### Modes and Determinism

- graph_get_nodenames(+, -) is semidet

### Fail Conditions

Fails if no node name information is available

## See Also

graph_set_nodenames / 2