is an overwhelming sadness that feels as if it has made its way into your very bloodstream . 
(ROOT (S (VP (VBZ is) (NP (NP (DT an) (JJ overwhelming) (NN sadness)) (SBAR (WHNP (WDT that)) (S (VP (VBZ feels) (SBAR (IN as) (IN if) (S (NP (PRP it)) (VP (VBZ has) (VP (VBN made) (NP (PRP$ its) (NN way)) (PP (IN into) (NP (PRP$ your) (JJ very) (NN bloodstream)))))))))))) (. .)))
(ROOT (S (VP (VBZ ) (NP (NP (DT ) (JJ ) (NN )) (SBAR (WHNP (WDT )) (S (VP (VBZ ) (SBAR (IN ) (IN ) (S (NP (PRP )) (VP (VBZ ) (VP (VBN ) (NP (PRP$ ) (NN )) (PP (IN ) (NP (PRP$ ) (JJ ) (NN )))))))))))) (. )))