( ( No ( reef ( building corals ) ) ) ( ( are ( present ( in ( the area ) ) ) ) . ) )
(ROOT (S (NP (DT No) (NN reef) (NN building) (NNS corals)) (VP (VBP are) (ADJP (JJ present) (PP (IN in) (NP (DT the) (NN area))))) (. .)))
No reef building corals are present in the area.
(ROOT (S (NP (NNS Corals)) (VP (VBP build) (NP (NP (JJ hard) (NNS exoskeletons)) (SBAR (WHNP (WDT that)) (S (VP (VBP grow) (S (VP (TO to) (VP (VB become) (NP (NN coral) (NNS reefs)))))))))) (. .)))