( ( In ( this ( last example ) ) ) ( , ( it ( ( ( is n't ) ( even ( ( ( loudness or ) sound ) ( ( at all ) ( that ( needs ( to ( be made ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (DT this) (JJ last) (NN example))) (, ,) (NP (PRP it)) (VP (VBZ is) (RB n't) (ADJP (RB even) (JJ loudness) (CC or) (JJ sound) (SBAR (ADVP (IN at) (DT all)) (IN that) (S (VP (VBZ needs) (S (VP (TO to) (VP (VB be) (VP (VBN made)))))))))) (. .)))
In this last example, it isn't even loudness or sound at all that needs to be made.
(ROOT (S (NP (NP (DT The) (NN sound)) (PP (IN in) (NP (DT a) (JJ loud) (NN classroom)))) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (NP (DT a) (NN form)) (PP (IN of) (NP (NN energy))))))) (. .)))