( ( ( ( TYPE ( OF REPRODUCTION ) ) : ) ( Sexual ( -LRB- ( 03 -RRB- ) ) ) ) . )
(ROOT (NP (NP (NP (NNP TYPE)) (PP (IN OF) (NP (NNP REPRODUCTION)))) (: :) (NP (NP (NNP Sexual)) (PRN (-LRB- -LRB-) (NP (CD 03)) (-RRB- -RRB-))) (. .)))
TYPE OF REPRODUCTION: Sexual (03).
(ROOT (S (NP (JJ Sexual) (NN reproduction)) (ADVP (RB usually)) (VP (VBP occur) (PP (IN during) (NP (NP (NNS times)) (PP (IN of) (NP (JJ environmental) (NN stress)))))) (. .)))