could be a single iota worse ... a soulless hunk of exploitative garbage . 
(ROOT (S (VP (MD could) (VP (VB be) (ADJP (ADJP (NP (DT a) (JJ single) (NN iota)) (JJR worse)) (, ...) (NP (NP (DT a) (JJ soulless) (NN hunk)) (PP (IN of) (NP (JJ exploitative) (NN garbage))))))) (. .)))
(ROOT (S (VP (MD ) (VP (VB ) (ADJP (ADJP (NP (DT ) (JJ ) (NN )) (JJR )) (, ) (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (JJ ) (NN ))))))) (. )))