def meet(a, b, pointerType=HYPERNYM):
 return (intersection(closure(a, pointerType), closure(b, pointerType)) + [None])[0]

def meet ( a , b , pointerType = HYPERNYM ) : return ( intersection ( closure ( a , pointerType ) , closure ( b , pointerType ) ) + [ None ] ) [ 0 ]
return the meet of a and b under the pointertype relationship .