abstract Relative = Cat ** { funThe simplest way to form a relative clause is from a clause by a pronoun similar to such that.
RelCl : Cl -> RCl ; -- such that John loves herThe more proper ways are from a verb phrase (formed in [``Verb`` Verb.html]) or a sentence with a missing noun phrase (formed in [``Sentence`` Sentence.html]).
RelVP : RP -> VP -> RCl ; -- who loves John RelSlash : RP -> ClSlash -> RCl ; -- whom John lovesRelative pronouns are formed from an 'identity element' by prefixing or suffixing (depending on language) prepositional phrases or genitives.
IdRP : RP ; -- which FunRP : Prep -> NP -> RP -> RP ; -- the mother of whom }