( It ( ( ( ( is ( unproven ( , ( probably FALSE ) ) ) ) , ) ( that ( ( natural selection ) ( is ( anything ( but ( ( ( a ( side factor ) ) ( -LRB- ( ( ( but ( on ( those terms ) ) ) important ) -RRB- ) ) ) ( in ( ( the evolution ) ( of complexity ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ is) (ADJP (JJ unproven) (, ,) (RB probably) (JJ FALSE)) (, ,) (SBAR (IN that) (S (NP (JJ natural) (NN selection)) (VP (VBZ is) (NP (NP (NN anything)) (PP (CC but) (NP (NP (NP (DT a) (NN side) (NN factor)) (PRN (-LRB- -LRB-) (ADJP (ADVP (RB but) (PP (IN on) (NP (DT those) (NNS terms)))) (JJ important)) (-RRB- -RRB-))) (PP (IN in) (NP (NP (DT the) (NN evolution)) (PP (IN of) (NP (NN complexity)))))))))))) (. .)))
It is unproven, probably FALSE, that natural selection is anything but a side factor (but on those terms important) in the evolution of complexity.
(ROOT (S (NP (NNP Community) (NNS interactions)) (VP (VBP are) (NP (NP (JJ important) (NNS factors)) (PP (IN in) (NP (JJ natural) (NN selection))))) (. .)))