( Prokaryotes ( ( ( ( ( were here ) first ) , ) ( ( appearing ( very soon ) ) ( after ( Earth ( had ( ( cooled ( enough ( for life ) ) ) ( to survive ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Prokaryotes)) (VP (VBD were) (ADVP (RB here)) (ADVP (RB first)) (, ,) (S (VP (VBG appearing) (ADVP (RB very) (RB soon)) (SBAR (IN after) (S (NP (NNP Earth)) (VP (VBD had) (VP (VBN cooled) (ADVP (RB enough) (PP (IN for) (NP (NN life)))) (S (VP (TO to) (VP (VB survive))))))))))) (. .)))
Prokaryotes were here first , appearing very soon after Earth had cooled enough for life to survive.
(ROOT (S (NP (NNS Prokaryotes)) (VP (VBD were) (NP (NP (DT the) (JJ first) (NN living) (NNS things)) (SBAR (S (VP (TO to) (VP (VB evolve) (PP (IN on) (NP (NN earth))))))))) (. .)))