the mark of a respectable summer blockbuster is one of two things : unadulterated thrills or genuine laughs . 
(ROOT (S (NP (NP (DT the) (NN mark)) (PP (IN of) (NP (DT a) (JJ respectable) (NN summer) (NN blockbuster)))) (VP (VBZ is) (NP (NP (CD one)) (PP (IN of) (NP (NP (CD two) (NNS things)) (: :) (NP (NP (JJ unadulterated) (NNS thrills)) (CC or) (NP (JJ genuine) (NNS laughs))))))) (. .)))
(ROOT (S (NP (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (JJ ) (NN ) (NN )))) (VP (VBZ ) (NP (NP (CD )) (PP (IN ) (NP (NP (CD ) (NNS )) (: ) (NP (NP (JJ ) (NNS )) (CC ) (NP (JJ ) (NNS ))))))) (. )))