Tracking down the tiger is a subtle affair, and requires a degree of dedication, calm, and stealth.
( ( ( Tracking down ) ( the tiger ) ) ( ( ( ( ( is ( a ( subtle affair ) ) ) , ) and ) ( requires ( ( a degree ) ( of ( ( ( ( ( dedication , ) calm ) , ) and ) stealth ) ) ) ) ) . ) )
(ROOT (S (S (VP (VBG Tracking) (PRT (RP down)) (NP (DT the) (NN tiger)))) (VP (VP (VBZ is) (NP (DT a) (JJ subtle) (NN affair))) (, ,) (CC and) (VP (VBZ requires) (NP (NP (DT a) (NN degree)) (PP (IN of) (NP (NP (NN dedication)) (, ,) (NP (NN calm)) (, ,) (CC and) (NP (NN stealth))))))) (. .)))
Searching for tigers requires great skill.
( ( Searching ( for tigers ) ) ( ( requires ( great skill ) ) . ) )
(ROOT (S (S (VP (VBG Searching) (PP (IN for) (NP (NNS tigers))))) (VP (VBZ requires) (NP (JJ great) (NN skill))) (. .)))