graph should be a data format

[zhengj2007]

From [email protected] on February 28, 2012 19:48:37

Currently graph is a subclass of Figure. I am not sure what a figure really is, but I do know that we need a graph data format as a type.

Thanks melissa

Original issue: http://code.google.com/p/information-artifact-ontology/issues/detail?id=132