( There ( ( are ( ( ( ( two types ) ( of reproduction ) ) , ) ( ( sexual and ) asexual ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD two) (NNS types)) (PP (IN of) (NP (NN reproduction))) (, ,) (ADJP (JJ sexual) (CC and) (JJ asexual)))) (. .)))
There are two types of reproduction, sexual and asexual.
(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)))))) (. .)))