( ( ( ( ( These ( all-in-one ( reproductive cells ) ) ) , ) ( ( incorporating ( the nutrients ) ) ( to ( support life ) ) ) ) , ) ( ( evolved ( ( ( about ( a billion ) ) years ) ago ) ) . ) )
(ROOT (S (NP (NP (DT These) (JJ all-in-one) (JJ reproductive) (NNS cells)) (, ,) (VP (VBG incorporating) (NP (DT the) (NNS nutrients)) (S (VP (TO to) (VP (VB support) (NP (NN life)))))) (, ,)) (VP (VBD evolved) (ADVP (NP (QP (RB about) (DT a) (CD billion)) (NNS years)) (RB ago))) (. .)))
These all-in-one reproductive cells, incorporating the nutrients to support life, evolved about a billion years ago.
(ROOT (S (NP (DT The) (JJ first) (VBG living) (NNS cells)) (VP (MD may) (VP (VB have) (VP (VBN evolved) (ADVP (NP (QP (RB around) (CD 4) (CD billion)) (NNS years)) (RB ago))))) (. .)))