( ( ( We and ) ( all ( other organisms ) ) ) ( ( are ( part ( of ( ( a journey ) ( that ( ( ( began ( ( ( almost ( 4 billion ) ) years ) ago ) ) , ) ( with ( ( the emergence ) ( of ( the ( first ( living cells ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (PRP We)) (CC and) (NP (DT all) (JJ other) (NNS organisms))) (VP (VBP are) (NP (NP (NN part)) (PP (IN of) (NP (NP (DT a) (NN journey)) (SBAR (WHNP (WDT that)) (S (VP (VBD began) (ADVP (NP (QP (RB almost) (CD 4) (CD billion)) (NNS years)) (RB ago)) (, ,) (PP (IN with) (NP (NP (DT the) (NN emergence)) (PP (IN of) (NP (DT the) (JJ first) (VBG living) (NNS cells)))))))))))) (. .)))
We and all other organisms are part of a journey that began almost 4 billion years ago , with  the emergence of the first living cells .
(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))))) (. .)))