Two such hints, however, have only a few possible answers in common, so that the solver can concentrate on them and pick the most probable one.
( ( Two ( such hints ) ) ( , ( however ( , ( ( ( ( have ( ( ( only ( a few ) ) ( possible answers ) ) ( in common ) ) ) , ) ( so ( that ( ( the solver ) ( can ( ( ( concentrate ( on them ) ) and ) ( pick ( the ( ( most probable ) one ) ) ) ) ) ) ) ) ) . ) ) ) ) )
(ROOT (S (NP (CD Two) (JJ such) (NNS hints)) (, ,) (ADVP (RB however)) (, ,) (VP (VBP have) (NP (NP (QP (RB only) (DT a) (JJ few)) (JJ possible) (NNS answers)) (PP (IN in) (NP (JJ common)))) (, ,) (SBAR (RB so) (IN that) (S (NP (DT the) (NN solver)) (VP (MD can) (VP (VP (VB concentrate) (PP (IN on) (NP (PRP them)))) (CC and) (VP (VB pick) (NP (DT the) (ADJP (RBS most) (JJ probable)) (NN one)))))))) (. .)))
Each problem only has one possible answer.
( ( Each problem ) ( only ( ( has ( one ( possible answer ) ) ) . ) ) )
(ROOT (S (NP (DT Each) (NN problem)) (ADVP (RB only)) (VP (VBZ has) (NP (CD one) (JJ possible) (NN answer))) (. .)))