, the country bears ... should keep parents amused with its low groan-to-guffaw ratio . 
(ROOT (S (, ,) (NP (DT the) (NN country) (VBZ bears)) (, ...) (VP (MD should) (VP (VB keep) (NP (NNS parents)) (S (ADJP (VBN amused) (PP (IN with) (NP (PRP$ its) (JJ low) (NML (NML (NN groan)) (HYPH -) (PP (IN to) (HYPH -) (NP (NN guffaw)))) (NN ratio))))))) (. .)))
(ROOT (S (, ) (NP (DT ) (NN ) (VBZ )) (, ) (VP (MD ) (VP (VB ) (NP (NNS )) (S (ADJP (VBN ) (PP (IN ) (NP (PRP$ ) (JJ ) (NML (NML (NN )) (HYPH ) (PP (IN ) (HYPH ) (NP (NN )))) (NN ))))))) (. )))