explanations, and to corroborate findings.
( explanations ( , ( and ( ( to ( corroborate findings ) ) . ) ) ) )
(ROOT (FRAG (NP (NNS explanations)) (, ,) (CC and) (FRAG (X (TO to)) (NP (JJ corroborate) (NNS findings))) (. .)))
Explanations, and to confirm findings.
( ( ( ( Explanations , ) and ) ( to ( confirm findings ) ) ) . )
(ROOT (S (S (VP (VB Explanations))) (, ,) (CC and) (S (VP (TO to) (VP (VB confirm) (NP (NNS findings))))) (. .)))