For most other dependencies (and all dependencies in German), Lemma is the most important feature, suggesting a strong reliance on lexical semantics of nouns and verbs.
we also notice that the model sometimes attends to features like Aspect, Polarity, and Verb-Form-since these features are present only on verbs, we suspect that the model may simply use them as convenient signals that a word is verb, and thus a likely head for a given noun.