moviegoers not already clad in basic black 
(ROOT (NP (NP (NNS moviegoers)) (VP (RB not) (ADVP (RB already)) (VP (VBN clad) (PP (IN in) (NP (JJ basic) (NN black)))))))
(ROOT (NP (NP (NNS )) (VP (RB ) (ADVP (RB )) (VP (VBN ) (PP (IN ) (NP (JJ ) (NN )))))))