Two is enough for a secret.
( Two ( ( is ( enough ( for ( a secret ) ) ) ) . ) )
(ROOT (S (NP (CD Two)) (VP (VBZ is) (ADJP (JJ enough) (PP (IN for) (NP (DT a) (NN secret))))) (. .)))
Both people are dedicated to keeping the secret.
( ( Both people ) ( ( are ( dedicated ( to ( keeping ( the secret ) ) ) ) ) . ) )
(ROOT (S (NP (DT Both) (NNS people)) (VP (VBP are) (ADJP (JJ dedicated) (PP (TO to) (S (VP (VBG keeping) (NP (DT the) (NN secret))))))) (. .)))