Uninstalling GNOME by /stand/sysinstall ?

[Bill Schoolcraft]

Hello,

I've installed 4.8 on my laptop and realized I needed to reclaim
back some space from /usr so removing "all" of GNOME was my first 
choice, keeping KDE.

When using /stand/sysinstall and chosing the post-installation
of packages I can remove certain GNOME packages but the other
GNOME ones claim dependencies.

[question]

I want "all" GNOME related packages removed, how is the easiest way
to do that?

Thanks