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)) (. .)))
Rationality of service tiers continues on.
( ( Rationality ( of ( service tiers ) ) ) ( ( continues on ) . ) )
(ROOT (S (NP (NP (NNP Rationality)) (PP (IN of) (NP (NN service) (NNS tiers)))) (VP (VBZ continues) (PRT (RP on))) (. .)))