a strong erotic spark to the most crucial lip-reading sequence 
(ROOT (NP (NP (DT a) (JJ strong) (JJ erotic) (NN spark)) (PP (IN to) (NP (DT the) (ADJP (RBS most) (JJ crucial)) (NN lip-) (NN reading) (NN sequence)))))
(ROOT (NP (NP (DT ) (JJ ) (JJ ) (NN )) (PP (IN ) (NP (DT ) (ADJP (RBS ) (JJ )) (NN ) (NN ) (NN )))))