( and ( ( allow ( students ( to ( ( ( ( ( write down ) ( ( ( all ( the counter-arguments ) ) or ) evidence ) ) , ) or ) ( ( present ( the case ) ) ( for ( accepting ( ( one theory ) ( over another ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (CC and) (VP (VB allow) (S (NP (NNS students)) (VP (TO to) (VP (VP (VB write) (PRT (RP down)) (NP (NP (PDT all) (DT the) (NNS counter-arguments)) (CC or) (NP (NN evidence)))) (, ,) (CC or) (VP (VB present) (NP (DT the) (NN case)) (PP (IN for) (S (VP (VBG accepting) (NP (NP (CD one) (NN theory)) (PP (IN over) (NP (DT another)))))))))))) (. .)))
and allow students to write down all the counter-arguments or evidence, or present the case for accepting one theory over another.
(ROOT (S (NP (NN Evidence)) (VP (VBZ allows) (S (NP (NNS theories)) (VP (TO to) (VP (VB be) (VP (ADVP (RB widely)) (VBN accepted)))))) (. .)))