( ( Evolution A ) ( ( is certainly ) ( ( ( ( what ( is ( called macroevolution ) ) ) , ) but ) ( what ( is ( called ( macroevolution ( ( is not ) ( identical ( with ( Evolution A. ) ) ) ) ) ) ) ) ) ) )
(ROOT (S (NP (NNP Evolution) (NNP A)) (VP (VBZ is) (ADVP (RB certainly)) (SBAR (SBAR (WHNP (WP what)) (S (VP (VBZ is) (VP (VBN called) (NP (NN macroevolution)))))) (, ,) (CC but) (SBAR (WHNP (WP what)) (S (VP (VBZ is) (VP (VBN called) (SBAR (S (NP (NN macroevolution)) (VP (VBZ is) (RB not) (ADJP (JJ identical) (PP (IN with) (NP (NNP Evolution) (NNP A.)))))))))))))))
Evolution A is certainly what is called macroevolution, but what is called macroevolution is not identical with Evolution A.
(ROOT (S (NP (NNP Macroevolution)) (VP (VBZ happens) (SBAR (WHADVP (WRB when)) (S (NP (NP (NNS forces)) (PP (IN of) (NP (NN evolution)))) (VP (VBP work) (PP (IN over) (NP (NP (DT a) (JJ long) (NN period)) (PP (IN of) (NP (NN time))))))))) (. .)))