Sometimes a sentence is placed for an antecedent, as

Heliogabalus, spiritu contento, viginti quatuor ostrearum demersit in alvum, quod Dandoni etiam longé antecellit.

Heliogabalus, at one breath, swallowed two dozen of oysters, which beats even Dando out and out.

Many of the ancients could swallow a good deal.

A relative placed between two substantives of different genders and numbers, sometimes agrees with the latter, as

Pueri tuentur illum librum quæ Latina Grammatices et Comica dicitur.

Boys regard that book which is called the Comic Latin Grammar.

Sometimes a relative agrees with the primitive, which is understood in the possessive, as

Mirabantur impudentiam suam qui ad reginam literas misit.

They wondered at his impudence, who wrote a letter to the queen.