( ( ( Level ( of ( Impact ( Cells ( & ( Tissues Organs ) ) ) ) ) ) ( & ( ( ( ( Organ ( Systems Function ) ) ( of ( Organ ( & ( Organ ( Systems ( Individual ( Society ( Structural ( or ( functional Structural ) ) ) ) ) ) ) ) ) ) ) or ) ( ( ( functional Action ) or ) ( ( activity performance ) ( of ( organ ( or ( organ system ) ) ) ) ) ) ) ) ) . )
(ROOT (NP (NP (NP (NNP Level)) (PP (IN of) (NP (NNP Impact) (NNP Cells) (CC &) (NNPS Tissues) (NNP Organs)))) (NP (CC &) (NP (NP (NNP Organ) (NNPS Systems) (NNP Function)) (PP (IN of) (NP (NNP Organ) (CC &) (NNP Organ) (NNPS Systems) (NNP Individual) (NNP Society) (NNP Structural) (CC or) (NNP functional) (NNS Structural)))) (CC or) (NP (NP (NNP functional) (NNP Action)) (CC or) (NP (NP (NN activity) (NN performance)) (PP (IN of) (NP (NN organ) (CC or) (NN organ) (NN system)))))) (. .)))
Level of Impact Cells &amp; Tissues Organs &amp; Organ Systems Function of Organ &amp; Organ Systems Individual Society Structural or functional Structural or functional Action or activity performance of organ or organ system.
(ROOT (S (NP (DT A) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN cell)) (VP (VBZ is) (NP (NP (DT the) (JJS lowest) (NN level)) (PP (IN of) (NP (NN organism))) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB perform) (NP (NP (DT all) (NNS activities)) (VP (VBN required) (PP (IN for) (NP (NN life))))))))))) (. .)))