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A DCG for simple English sentences with pronouns.
It overgenerates because it doesn't distinguish between
pronouns as subject and object 

This version: 13/06/03 stwa
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s --> np,vp.
np --> det,n.
np --> pro.
vp --> v,np.


det --> [the].
det --> [a].
n --> [witch].
n --> [wizard].
v --> [curses].
pro --> [he].
pro --> [she].
pro --> [him].
pro --> [her].