Greetings,
Actually, I think you want to use File->Import->Network->File, not
Table->File. This will bring up a very similar interface but allow you
indicate that "Facet" is the source node column and "Frequency" is a
Source Node Attribute. You won't select any Target node information.
You'll get a warning when you click OK, but in the end, you should get a
network with no edges.
-- scooter