The only resources for the language pair English-German that are known to us include the GECCo corpus (Lapshinova-Koltunski and Kunz, 2014), the ParCor corpus  and the multilingual coreference corpus described by (Grishina and Stede, 2015).
moreover, negation in German can be expressed not only with the adverb nicht, but also with the indefinite pronoun kein.