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))) (. .)))
To disapprove findings and explanations.
( ( To ( disapprove ( ( findings and ) explanations ) ) ) . )
(ROOT (S (VP (TO To) (VP (VB disapprove) (NP (NNS findings) (CC and) (NNS explanations)))) (. .)))