( ( 4 -RRB- ) ( ( ( ( It ( now ( seems ( roots ( of fireweed ) ) ) ) ) and ) ( ( ( ( ( pearly everlasting ) , ) ( ( two ( heroically ( stubborn plants ) ) ) ( that ( can ( sprout ( within ( hours ( of ( a ( forest fire ) ) ) ) ) ) ) ) ) ) , ) ( somehow ( survived ( ( the megatonnage ) ( of ( the detonation ) ) ) ) ) ) ) . ) )
(ROOT (S (LST (LS 4) (-RRB- -RRB-)) (S (NP (PRP It)) (ADVP (RB now)) (VP (VBZ seems) (NP (NP (NNS roots)) (PP (IN of) (NP (NN fireweed)))))) (CC and) (S (NP (NP (JJ pearly) (NNS everlasting)) (, ,) (NP (NP (CD two) (JJ heroically) (JJ stubborn) (NNS plants)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB sprout) (PP (IN within) (NP (NP (NNS hours)) (PP (IN of) (NP (DT a) (NN forest) (NN fire)))))))))) (, ,)) (ADVP (RB somehow)) (VP (VBD survived) (NP (NP (DT the) (NN megatonnage)) (PP (IN of) (NP (DT the) (NN detonation)))))) (. .)))
4) It now seems roots of fireweed and pearly everlasting, two heroically stubborn plants that can sprout within hours of a forest fire, somehow survived the megatonnage of the detonation.
(ROOT (S (NP (NNP New) (NNS plants)) (VP (VBP start) (S (VP (VBG sprouting) (PP (ADVP (NP (CD two) (NNS months)) (RBR later)) (IN after) (NP (DT a) (NN forest) (NN fire)))))) (. .)))