( ( Before ( ( Kilauea Iki ) erupted ) ) ( , ( it ( ( was ( ( 200 meters ) deep ) ) . ) ) ) )
(ROOT (S (SBAR (IN Before) (S (NP (NNP Kilauea) (NNP Iki)) (VP (VBD erupted)))) (, ,) (NP (PRP it)) (VP (VBD was) (ADJP (NP (CD 200) (NNS meters)) (JJ deep))) (. .)))
Before Kilauea Iki erupted, it was 200 meters deep.
(ROOT (S (NP (DT The) (JJ photic) (NN zone)) (VP (VBZ extends) (ADJP (NP (CD 200) (NNS meters)) (JJ deep))) (. .)))
The photic zone extends 200 meters deep.