the entire point of a shaggy dog story , of course , is that it goes nowhere , 
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(ROOT (S (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (DT ) (NML (JJ ) (NN )) (NN )))) (, ) (ADVP (IN ) (NN )) (, ) (VP (VBZ ) (SBAR (IN ) (S (NP (PRP )) (VP (VBZ ) (ADVP (RB )))))) (, )))