topics that could make a sailor blush 
(ROOT (NP (NP (NNS topics)) (SBAR (WHNP (WDT that)) (S (VP (MD could) (VP (VB make) (S (NP (DT a) (NN sailor)) (ADJP (NN blush)))))))))
(ROOT (NP (NP (NNS )) (SBAR (WHNP (WDT )) (S (VP (MD ) (VP (VB ) (S (NP (DT ) (NN )) (ADJP (NN )))))))))