The possessive predicate have (which has the same form as the existential there_is) takes two arguments, the possessor subject and the possessed object.
have
ix1 car two have.
‘I have two cars.’
(http://tidsozluk.net/tr/Var?d=0007)
The possessive pronoun, poss, can also function as a predicate.
poss3
… car registration wifea poss3a
‘The car belongs to my wife.’
(http://tidsozluk.net/tr/Benim?d=0694)
The wh-word who is ambiguous between an argument and a predicate and below it functions as a possessive predicate, meaning ‘whose’.
you for surprise gift get. house title. deed who, yours.
‘I got a surprise gift for you. The house is whose? Yours.