3. The Relative regularly agrees with a predicate noun (either Nominative or Accusative) instead of its antecedent; as,—
carcer, quae lautumiae vocantur, the prison, which is called Lautumiae;
Belgae, quae est tertia pars, the Belgians, who are the third part.
4. Sometimes the Relative takes its gender and number from the meaning of its antecedent; as,—
pars quī bēstiīs objectī sunt, a part (of the men) who were thrown to beasts.
5. Occasionally the Relative is attracted into the case of its antecedent; as,—
nātus eō patre quō dīxī, born of the father that I said.
[251]. Antecedent. 1. The antecedent of the Relative is sometimes omitted; as,—
quī nātūram sequitur sapiēns est, he who follows Nature is wise.
2. The antecedent may be implied in a possessive pronoun (or rarely an adjective); as,—
nostra quī remānsimus caedēs, the slaughter of us who remained;
servīlī tumultū, quōs ūsus ac disciplīna sublevārunt, at the uprising of the slaves, whom experience and discipline assisted (servīlī = servōrum).