( ( ( The distribution ) ( of ( ( ( Vascular Tissues ) ( -LRB- ( Stele -RRB- ) ) ) ( in ( ( the stems ) ( of plants ) ) ) ) ) ) ( ( ( varies ( from ( the simple ) ) ) ( to ( the complex ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN distribution)) (PP (IN of) (NP (NP (NP (NNP Vascular) (NNPS Tissues)) (PRN (-LRB- -LRB-) (NP (NNP Stele)) (-RRB- -RRB-))) (PP (IN in) (NP (NP (DT the) (NN stems)) (PP (IN of) (NP (NNS plants)))))))) (VP (VBZ varies) (PP (IN from) (NP (DT the) (NN simple))) (PP (TO to) (NP (DT the) (NN complex)))) (. .)))
The distribution of Vascular Tissues ( Stele ) in the stems of plants varies from the simple to the complex.
(ROOT (S (NP (NP (JJ Present-day) (NNS plants)) (SBAR (WHNP (WDT that)) (S (VP (VBP have) (NP (DT a) (JJ complex) (NN vascular) (NN tissue) (NN system)))))) (VP (VBP are) (VP (VBN called) (NP (NN vasuluar) (NNS plants)))) (. .)))