are more compelling than the execution 
(ROOT (VP (VBP are) (ADJP (ADJP (RBR more) (JJ compelling)) (PP (IN than) (NP (DT the) (NN execution))))))
(ROOT (VP (VBP ) (ADJP (ADJP (RBR ) (JJ )) (PP (IN ) (NP (DT ) (NN ))))))