at its best , it 's black hawk down with more heart . 
(ROOT (S (PP (IN at) (NP (PRP$ its) (JJS best))) (, ,) (NP (PRP it)) (VP (VBZ 's) (NP (JJ black) (NN hawk)) (ADVP (RB down) (PP (IN with) (NP (JJR more) (NN heart))))) (. .)))
(ROOT (S (PP (IN ) (NP (PRP$ ) (JJS ))) (, ) (NP (PRP )) (VP (VBZ ) (NP (JJ ) (NN )) (ADVP (RB ) (PP (IN ) (NP (JJR ) (NN ))))) (. )))