That's best thing, that's the best play right now.
( That ( ( ( 's best ) ( ( thing , ) ( that ( ( 's ( the ( best play ) ) ) ( right now ) ) ) ) ) . ) )
(ROOT (S (NP (DT That)) (VP (VBZ 's) (ADVP (RBS best)) (NP (NP (NN thing)) (, ,) (SBAR (WHNP (WDT that)) (S (VP (VBZ 's) (NP (DT the) (JJS best) (NN play)) (ADVP (RB right) (RB now))))))) (. .)))
That is the worst at the moment.
( That ( ( is ( ( the worst ) ( at ( the moment ) ) ) ) . ) )
(ROOT (S (NP (DT That)) (VP (VBZ is) (NP (NP (DT the) (JJS worst)) (PP (IN at) (NP (DT the) (NN moment))))) (. .)))