( It ( ( ( is ( ( an example ) ( of ( the ( growing realization ) ) ) ) ) ( that ( ( ( ( ground water ) and ) ( surface water ) ) ( are ( essentially ( one resource ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (DT the) (VBG growing) (NN realization)))) (SBAR (IN that) (S (NP (NP (NN ground) (NN water)) (CC and) (NP (NN surface) (NN water))) (VP (VBP are) (NP (RB essentially) (CD one) (NN resource)))))) (. .)))
It is an example of the growing realization that ground water and surface water are essentially one resource.
(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.