Progressives at last are noticing that the best argument for government activism is that it works.
( ( Progressives ( at last ) ) ( ( are ( noticing ( that ( ( ( the ( best argument ) ) ( for ( government activism ) ) ) ( is ( that ( it works ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Progressives)) (PP (IN at) (NP (JJ last)))) (VP (VBP are) (VP (VBG noticing) (SBAR (IN that) (S (NP (NP (DT the) (JJS best) (NN argument)) (PP (IN for) (NP (NN government) (NN activism)))) (VP (VBZ is) (SBAR (IN that) (S (NP (PRP it)) (VP (VBZ works))))))))) (. .)))
Progressives are just now realizing that the best way to argue government activism is that it has proven to be very successful, although this isn't the only part of the argument progressives are noticing.
( Progressives ( ( ( are just ) ( now ( realizing ( that ( ( ( the ( best way ) ) ( to ( argue ( ( government activism ) ( is ( that ( it ( has ( proven ( to ( ( ( be ( very successful ) ) , ) ( although ( this ( ( is n't ) ( ( the ( only part ) ) ( of ( the ( argument progressives ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ( are noticing ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Progressives)) (VP (VBP are) (ADVP (RB just)) (VP (ADVP (RB now)) (VBG realizing) (SBAR (IN that) (S (NP (NP (DT the) (JJS best) (NN way)) (SBAR (S (VP (TO to) (VP (VB argue) (SBAR (S (NP (NN government) (NN activism)) (VP (VBZ is) (SBAR (IN that) (S (NP (PRP it)) (VP (VBZ has) (VP (VBN proven) (S (VP (TO to) (VP (VB be) (ADJP (RB very) (JJ successful)) (, ,) (SBAR (IN although) (S (NP (DT this)) (VP (VBZ is) (RB n't) (NP (NP (DT the) (JJ only) (NN part)) (PP (IN of) (NP (DT the) (NN argument) (NNS progressives)))))))))))))))))))))) (VP (VBP are) (VP (VBG noticing))))))) (. .)))