( ( Most echinoderms ) ( ( reproduce sexually ) . ) )
(ROOT (S (NP (JJS Most) (NNS echinoderms)) (VP (VB reproduce) (ADVP (RB sexually))) (. .)))
Most echinoderms reproduce sexually.
(ROOT (S (NP (JJS Most) (NN fish)) (VP (VB reproduce) (PP (IN with) (NP (CD one) (DT another))) (ADVP (RB sexually))) (. .)))