Nonetheless, the rationality of service tiers remains.
( Nonetheless ( , ( ( ( the rationality ) ( of ( service tiers ) ) ) ( remains . ) ) ) )
(ROOT (S (ADVP (RB Nonetheless)) (, ,) (NP (NP (DT the) (NN rationality)) (PP (IN of) (NP (NN service) (NNS tiers)))) (VP (VBZ remains)) (. .)))
The rationality of service tiers is no longer.
( ( ( The rationality ) ( of ( service tiers ) ) ) ( ( is ( no longer ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN rationality)) (PP (IN of) (NP (NN service) (NNS tiers)))) (VP (VBZ is) (ADVP (RB no) (RB longer))) (. .)))