Subjects of passive past participles
In SUD, there is no distinction between subjects of active verbs and subjects of passive verbs. The existence of a passive auxiliary makes it possible to distinguish the two types of subjects. When the auxiliary is absent, a lexicon must be used to decide.
Example: UD_French-GSD,fr-ud-train_13664 - Rétablissez ensuite le courant une fois l'opération terminée