( ( In 1978 ) ( , ( ( Carl Woese ) ( ( discovered ( ( Archaebacteria . ) ( ( In 1990 ) ( , ( he ( proved ( that ( Archaebacteria ( was ( a ( separate kingdom ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (CD 1978))) (, ,) (NP (NNP Carl) (NNP Woese)) (VP (VBD discovered) (NP (NP (NNP Archaebacteria) (. .)) (SBAR (S (PP (IN In) (NP (CD 1990))) (, ,) (NP (PRP he)) (VP (VBD proved) (SBAR (IN that) (S (NP (NNP Archaebacteria)) (VP (VBD was) (NP (DT a) (JJ separate) (NN kingdom)))))))))) (. .)))
In 1978, Carl Woese discovered Archaebacteria.  In 1990, he proved that Archaebacteria was a separate kingdom.
(ROOT (S (NP (NNP Carl) (NNP woese)) (VP (VBN constructed) (NP (DT a) (NN tree) (NN diagram)) (, ,) (S (VP (VBG separating) (NP (VBG living) (NNS organisms)) (PP (IN into) (NP (CD three) (NNS domains)))))) (. .)))