(S (S (BASENP (DT The) (NN voter) (NN turnout)) (VP (VBD was) (NP (NP (BASENP (QP (RB around) (NN 57)) (NN %)) (PP (IN of) (BASENP (DT all) (JJ eligible) (NNS voters)))) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VP (VBP number) (BASENP (QP (NN 18) (NN million)) (NNS people))) (PP (IN in) (NP (BASENP (DT a) (NN country)) (PP (IN of) (BASENP (QP (NN 21.7) (NN million)))))))))))) (PERIOD .))