Relative clauses: who and which

aki ('who') is for people, ami ('what/which') is for things and ideas — both work exactly like a noun, taking whatever case ending their role in the clause needs: akit ('whom', direct object), akinek ('to/for whom'), akivel ('with whom').

Hungarian often keeps a pointing word in the main clause that matches: Ismerem azt a lányt, aki ott áll ('I know that girl who is standing there') — azt and aki both agree with 'the girl', one in the main clause, one in the relative clause.