members/class
 
Syntax:
 

(assert members i class j)

 
Semantics:
[[m]] is the proposition that [[i]] are (members of class) [[j]].
 
Sample Context:
 
Knights are people.
 

(describe (assert members (build lex "Knights") class (build lex "people")))

Required Usage:
 

If the class in question is basic-level (e.g., tables, people) then you *must* use the members/class case frame, and *not* the objects1/rel/object2 case frame.