more than a tepid exercise in 
(ROOT (ADJP (ADJP (JJR more)) (PP (IN than) (NP (NP (DT a) (JJ tepid) (NN exercise)) (PP (IN in))))))
(ROOT (ADJP (ADJP (JJR )) (PP (IN ) (NP (NP (DT ) (JJ ) (NN )) (PP (IN ))))))