Plural review, definite/indefinite/zero article choice, full Possessivartikel case declension, and nicht/kein negation (pp. 79-84). Flags J4's Akkusativ/Dativ Possessivartikel endings as grammar beyond Menschen A1.1's Nominativ-only mein/dein. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>