( Cells ( ( ( work together ) ( to ( form ( tissues ( to ( then ( form ( organs ( that ( perform ( ( specific functions ) ( vital ( for organisms ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Cells)) (VP (VBP work) (ADVP (RB together)) (S (VP (TO to) (VP (VB form) (S (NP (NNS tissues)) (VP (TO to) (VP (ADVP (RB then)) (VB form) (NP (NP (NNS organs)) (SBAR (WHNP (WDT that)) (S (VP (VBP perform) (S (NP (JJ specific) (NNS functions)) (ADJP (JJ vital) (PP (IN for) (NP (NNS organisms)))))))))))))))) (. .)))
Cells work together to form tissues to then form organs that perform specific functions vital for organisms.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NP (JJ different) (NNS types)) (PP (IN of) (NP (NNS tissues)))) (VP (VBP work) (ADVP (RB together)) (S (VP (TO to) (VP (VB perform) (NP (DT a) (JJ unique) (NN function)))))))) (, ,) (NP (PRP they)) (VP (VBP form) (NP (NN organ))) (. .)))