Bilingual mental lexicon; Lexicon (biling.) ; Third language acquisition ; Transfer (second language acquisition) ; Transfer (Zweitspracherwerb) ; Cross-linguistic influence (second language acquisition) ; Interference (second language acquisition) ; Zweitspracherwerb (lex.) ; Second language acquisition (lex.) ; Vocabulary (second language acquisition) ; Kognate ; Aktantenmodell; Polyadicity; Valency ; Argument structure; Argumentstruktur; Experiencer; Benefactive; Thematic role ; German ; English ; Spanish