menre experimental gismu

x1 is/are among the referent(s) of x2

See also me.

In notes:

x1 considers/opines x2 to be among x3
x1 is any referent of x2 ; x2 has a set of referents, but the difference between the members of the set is not important
mei'e (exp!)
Accepts any number of sumti and turns them into a selbri-unit that means "x1 is among the referents of these sumti".
x1 are the result of mapping x2 using function x3 (2-ary ka)
x1 is among x2, x3, x4, etc.