( ( An ( Arabidopsis flower ) ) ( ( consists ( of ( ( ( ( ( four ( floral ( organ types ) ) ) , ) ( sepal ( , ( petal ( , ( ( stamen and ) carpel ) ) ) ) ) ) , ) ( ( ( found ( in ( floral ( whorls ( 1 ( , ( 2 ( , ( ( 3 and ) 4 ) ) ) ) ) ) ) ) ) , ) respectively ) ) ) ) . ) )
(ROOT (S (NP (DT An) (NNP Arabidopsis) (NN flower)) (VP (VBZ consists) (PP (IN of) (S (NP (NP (CD four) (JJ floral) (NN organ) (NNS types)) (, ,) (ADJP (JJ sepal) (, ,) (JJ petal) (, ,) (JJ stamen) (CC and) (JJ carpel)) (, ,)) (VP (VBN found) (PP (IN in) (NP (NP (JJ floral)) (ADJP (JJ whorls) (NP (CD 1) (, ,) (CD 2) (, ,) (CD 3) (CC and) (CD 4))))) (, ,) (ADVP (RB respectively)))))) (. .)))
An Arabidopsis flower consists of four floral organ types, sepal, petal, stamen and carpel, found in floral whorls 1, 2, 3 and 4, respectively.
(ROOT (S (S (NP (NP (NNS Sepals)) (, ,) (NP (NNS petals)) (, ,)) (VP (VBZ stamens))) (, ,) (CC and) (S (NP (NNS carpels)) (VP (VBP are) (NP (JJ floral) (NNS organs)))) (. .)))