Indefinite pronoun dropped in some linearizations if used with variable in apposition

[Kaljurand]

Words300> p -lang=Ace "John is nothing X ." | l
John is nothing X .
Joan és X .
John er X .
Jan is X .
Jussi on mikään X .
Jean est X .
Johann ist X .
Giovanni è X .
Jānis ir X .
...