( ( it ( is ( ( compound or ) simple ) ) ) ( , ( ( the compound ) ( ( ( can not ) ( exist ( without ( the simple ) ) ) ) . ) ) ) )
(ROOT (S (S (NP (PRP it)) (VP (VBZ is) (ADJP (JJ compound) (CC or) (JJ simple)))) (, ,) (NP (DT the) (NN compound)) (VP (MD can) (RB not) (VP (VB exist) (PP (IN without) (NP (DT the) (NN simple))))) (. .)))
it is compound or simple, the compound cannot exist without the simple.
(ROOT (S (NP (NNS Scissors)) (VP (VBP are) (NP (JJ compound) (NNS machines))) (. .)))