( ( ( Bacterial STD ) ( While ( ( chlamydia ( , ( ( gonorrhea and ) syphilis ) ) ) ( are ( less ( likely ( to ( be ( transmitted ( between women ) ) ) ) ) ) ) ) ) ) ( , ( it ( ( does ( happen rarely ) ) . ) ) ) )
(ROOT (S (SBAR (NP (NNP Bacterial) (NNP STD)) (IN While) (S (NP (NN chlamydia) (, ,) (NN gonorrhea) (CC and) (NNS syphilis)) (VP (VBP are) (ADJP (RBR less) (JJ likely) (S (VP (TO to) (VP (VB be) (VP (VBN transmitted) (PP (IN between) (NP (NNS women))))))))))) (, ,) (NP (PRP it)) (VP (VBZ does) (VP (VB happen) (ADVP (RB rarely)))) (. .)))
Bacterial STD While chlamydia, gonorrhea and syphilis are less likely to be transmitted between women, it does happen rarely.
(ROOT (S (NP (NNP Chlamydia) (, ,) (NNP gonorrhea) (, ,) (CC and) (NNP syphilis)) (VP (VBP are) (NP (NP (NNS examples)) (PP (IN of) (NP (JJ bacterial) (NNS stis))))) (. .)))