about issues most adults have to face in marriage 
(ROOT (PP (IN about) (NP (NP (NNS issues)) (SBAR (S (NP (JJS most) (NNS adults)) (VP (VBP have) (S (VP (TO to) (VP (VB face) (PP (IN in) (NP (NN marriage))))))))))))
(ROOT (PP (IN ) (NP (NP (NNS )) (SBAR (S (NP (JJS ) (NNS )) (VP (VBP ) (S (VP (TO ) (VP (VB ) (PP (IN ) (NP (NN ))))))))))))