is impossible not to be awed by the power and grace of one of the greatest natural sportsmen of modern times 
(ROOT (VP (VBZ is) (ADJP (JJ impossible)) (S (RB not) (VP (TO to) (VP (VB be) (VP (VBN awed) (PP (IN by) (NP (NP (DT the) (NN power) (CC and) (NN grace)) (PP (IN of) (NP (NP (CD one)) (PP (IN of) (NP (NP (DT the) (JJS greatest) (JJ natural) (NNS sportsmen)) (PP (IN of) (NP (JJ modern) (NNS times)))))))))))))))
(ROOT (VP (VBZ ) (ADJP (JJ )) (S (RB ) (VP (TO ) (VP (VB ) (VP (VBN ) (PP (IN ) (NP (NP (DT ) (NN ) (CC ) (NN )) (PP (IN ) (NP (NP (CD )) (PP (IN ) (NP (NP (DT ) (JJS ) (JJ ) (NNS )) (PP (IN ) (NP (JJ ) (NNS )))))))))))))))