has a built-in audience , but only among those who are drying out from spring break and are still unconcerned about what they ingest 
(ROOT (S (VP (VBZ has) (NP (NP (DT a) (ADJP (VBN built) (HYPH -) (RP in)) (NN audience)) (, ,) (CC but) (PP (ADVP (RB only)) (IN among) (NP (NP (DT those)) (SBAR (WHNP (WP who)) (S (VP (VP (VBP are) (VP (VBG drying) (PRT (RP out)) (PP (IN from) (NP (NN spring) (NN break))))) (CC and) (VP (VBP are) (ADVP (RB still)) (ADJP (JJ unconcerned) (PP (IN about) (SBAR (WHNP (WP what)) (S (NP (PRP they)) (VP (VBP ingest))))))))))))))))
(ROOT (S (VP (VBZ ) (NP (NP (DT ) (ADJP (VBN ) (HYPH ) (RP )) (NN )) (, ) (CC ) (PP (ADVP (RB )) (IN ) (NP (NP (DT )) (SBAR (WHNP (WP )) (S (VP (VP (VBP ) (VP (VBG ) (PRT (RP )) (PP (IN ) (NP (NN ) (NN ))))) (CC ) (VP (VBP ) (ADVP (RB )) (ADJP (JJ ) (PP (IN ) (SBAR (WHNP (WP )) (S (NP (PRP )) (VP (VBP ))))))))))))))))