( So ( ( one ( borderline non-example ) ) ( ( is ( ( a glass ) ( of ( water ( -- ( as ( opposed ( to ( ( a glassful ) ( of water ) ) ) ) ) ) ) ) ) ) ; ) ) )
(ROOT (S (CC So) (NP (CD one) (JJ borderline) (NN non-example)) (VP (VBZ is) (NP (NP (DT a) (NN glass)) (PP (IN of) (NP (NP (NN water)) (PRN (: --) (ADJP (RB as) (VBN opposed) (PP (TO to) (NP (NP (DT a) (NN glassful)) (PP (IN of) (NP (NN water))))))))))) (: ;)))
So one borderline non-example is a glass of water -- as opposed to a glassful of water;
(ROOT (S (NP (NP (CD One) (NN example)) (PP (IN of) (NP (NN matter)))) (VP (VBZ is) (NP (NN water))) (. .)))
One example of matter is water.