For W9's exemplary precision in telling us what vocabulary entries and dictionary entries are is offset by its vagueness about which type of entry its PR-wallahs have counted for their blurb.
( For ( ( ( ( W9 's ) ( exemplary precision ) ) ( in ( ( telling us ) ( what ( ( ( ( vocabulary entries ) and ) ( dictionary entries ) ) are ) ) ) ) ) ( ( is ( offset ( by ( ( its vagueness ) ( ( about ( ( which type ) ( of entry ) ) ) ( ( its PR-wallahs ) ( have ( counted ( for ( their blurb ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (IN For) (NP (NP (NP (NNP W9) (POS 's)) (JJ exemplary) (NN precision)) (PP (IN in) (S (VP (VBG telling) (NP (PRP us)) (SBAR (WHNP (WP what)) (S (NP (NP (NN vocabulary) (NNS entries)) (CC and) (NP (NN dictionary) (NNS entries))) (VP (VBP are)))))))) (VP (VBZ is) (VP (VBN offset) (PP (IN by) (NP (NP (PRP$ its) (NNS vagueness)) (SBAR (WHPP (IN about) (WHNP (WHNP (WDT which) (NN type)) (PP (IN of) (NP (NN entry))))) (S (NP (PRP$ its) (NNS PR-wallahs)) (VP (VBP have) (VP (VBN counted) (PP (IN for) (NP (PRP$ their) (NN blurb))))))))))) (. .)))
Even though W9 is very accurate in explaining vocabulary and dictionary entries, it is imprecise about on another matter.
( ( Even ( though ( W9 ( is ( very ( accurate ( in ( explaining ( vocabulary ( and ( dictionary entries ) ) ) ) ) ) ) ) ) ) ) ( , ( it ( ( is ( imprecise ( about ( on ( another matter ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (RB Even) (IN though) (S (NP (NNP W9)) (VP (VBZ is) (ADJP (RB very) (JJ accurate) (PP (IN in) (S (VP (VBG explaining) (NP (NN vocabulary) (CC and) (NN dictionary) (NNS entries))))))))) (, ,) (NP (PRP it)) (VP (VBZ is) (ADJP (JJ imprecise) (PP (IN about) (PP (IN on) (NP (DT another) (NN matter)))))) (. .)))