he monolingual interpreters Olivier and Godfrey,
each equivalence class of signs over each object is
in fact just a singletion set, containing the only
name that the agent knows for that object.

For the bilingual interpreters Josiane and Kim+Lex,
the sign relations are completely identical, since
the order of rows does not matter.  The partition
of signs that these two agents share, as a set of
sets, can be written as follows:

|    {{ "pink"   , "rose"  },
|     { "green"  , "vert"  },
|     { "yellow" , 