S (num) -> Np(num case:subj) Vp(num) | S conj S
S (num) -> Np(num case:subj) cop(num) ppart
S(num) -> Np(num case:subj) cop(num) ppart passmarker Np(case:obj)
Np (num case) -> det(num) Nn(num) | Np Pp | pn(num case)
Np -> Np conj Np
Nn(num) -> n(num) | adj n(num)
Vp(num)  -> v(num tr:trans) Np(case:obj) | v(num tr:intrans) | cop(num) adj
Vp(num) -> Vp(num) Pp
Pp -> prep Np(case:obj)