domainOf & other problems

Using your Perl KB browser, the "domainOf" property seems to list all the properties of a Class.
However, the GetData function does NOT return the list of properties.
Why not???

For example
    mkrGetData Person has ?
returns nothing.

I see some other strange results.  
For example
    mkrGetData Resource isc ?
returns nothing, while
    mkrGetData Node isc ?
returns
  http://tap.stanford.edu/data/PropertyType
  http://tap.stanford.edu/data/Event
  http://tap.stanford.edu/data/Activity
  http://tap.stanford.edu/data/Tangible
  Class
  http://tap.stanford.edu/data/Intangible
  http://tap.stanford.edu/data/Agent
  http://tap.stanford.edu/data/Literal
and
    mkrGetData Activity isa ?
returns
  Resource
============ 
Dick McCullough 
knowledge := man do identify od existent done
knowledge haspart proposition list