( ( Since ( they ( ( can not ) ( produce ( their ( own food ) ) ) ) ) ) ( , ( ( these organisms ) ( ( are ( called ( ( `` ( heterotrophs '' ) ) ( which ( ( means `` ) ( other eating ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Since) (S (NP (PRP they)) (VP (MD can) (RB not) (VP (VB produce) (NP (PRP$ their) (JJ own) (NN food)))))) (, ,) (NP (DT these) (NNS organisms)) (VP (VBP are) (VP (VBN called) (NP (NP (`` ``) (NNS heterotrophs) ('' '')) (SBAR (WHNP (WDT which)) (S (VP (VBZ means) (`` ``) (NP (JJ other) (NN eating)))))))) (. .)))
Since they cannot produce their own food, these organisms are called &quot;heterotrophs&quot; which means &quot;other eating.
(ROOT (S (NP (NNS Animals)) (VP (MD can) (RB not) (VP (VB produce) (NP (PRP$ their) (JJ own) (NN food)) (S (VP (VBG making) (S (NP (PRP them)) (ADJP (JJ heterotrophs)))))))))