( However ( , ( ( the evidence ) ( ( ( ( is controversial ) and ) ( ( is not ) ( widely accepted ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB However)) (, ,) (NP (DT the) (NN evidence)) (VP (VP (VBZ is) (ADJP (JJ controversial))) (CC and) (VP (VBZ is) (RB not) (VP (ADVP (RB widely)) (VBN accepted)))) (. .)))
However, the evidence is controversial and is not widely accepted.
(ROOT (S (NP (NN Evidence)) (VP (VBZ allows) (S (NP (NNS theories)) (VP (TO to) (VP (VB be) (VP (ADVP (RB widely)) (VBN accepted)))))) (. .)))