> Qui bono? It’s „cui bono“ because it’s using dative case i.e. „whom is the favor“. Declination of the Latin relative pronoun „qui“ is the following for the

> Qui bono? It’s „cui bono“ because it’s using dative case i.e. „whom is the favor“. Declination of the Latin relative pronoun „qui“ is the following for the masculine genus: qui cuius cui quem quo Sorry for being a grammar nazi.