( ( In January ) ( , ( ( ( 1998 ( , ( virus particles ) ) ) ( in ( surprising abundance ) ) ) ( ( have ( been ( reported ( found ( in ( ( the ( most ( barren lakes ) ) ) ( on ( Earth ( ( , ( ( in ( Dry Valley ) ) , ) ) Antarctica ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NNP January))) (, ,) (NP (NP (CD 1998) (, ,) (NN virus) (NNS particles)) (PP (IN in) (NP (JJ surprising) (NN abundance)))) (VP (VBP have) (VP (VBN been) (VP (VBN reported) (S (VP (VBN found) (PP (IN in) (NP (NP (DT the) (RBS most) (JJ barren) (NNS lakes)) (PP (IN on) (NP (NNP Earth) (PRN (, ,) (PP (IN in) (NP (NNP Dry) (NNP Valley))) (, ,)) (NNP Antarctica)))))))))) (. .)))
In January, 1998, virus particles in surprising abundance have been reported found in the most barren lakes on Earth, in Dry Valley, Antarctica.
(ROOT (S (NP (NNS Viruses)) (VP (VBP are) (NP (NP (DT the) (ADJP (RBS most) (JJ abundant)) (NN type)) (PP (IN of) (NP (NP (JJ biological) (NN entity)) (PP (IN on) (NP (DT the) (NN earth))))))) (. .)))