text: One would think that the type information ti , which is more specific than that 16 A linguistic example based on the signature given by Pollard and Sag ( 1994 ) would be a lexical rule deriving predicative signs from nonpredicative ones , i.e. , changing the PRD value of substantive signs from -- to - F , much like the lexical rule for NPs given by Pollard and Sag ( 1994 , p. 360 , fn .