only to record the events for posterity , but 
(ROOT (S (ADVP (RB only)) (VP (TO to) (VP (VB record) (NP (DT the) (NNS events)) (PP (IN for) (NP (NN posterity))))) (, ,) (CC but)))
(ROOT (S (ADVP (RB )) (VP (TO ) (VP (VB ) (NP (DT ) (NNS )) (PP (IN ) (NP (NN ))))) (, ) (CC )))