( ( This section ) ( ( ( ( deals ( with ( the ( theories about ) ) ) ) and ) ( evidence ( to ( support ( their survival ) ) ) ) ) . ) )
(ROOT (S (NP (DT This) (NN section)) (VP (VP (VBZ deals) (PP (IN with) (NP (DT the) (NNS theories) (RB about)))) (CC and) (VP (NP (NN evidence)) (S (VP (TO to) (VP (VB support) (NP (PRP$ their) (NN survival))))))) (. .)))
This section deals with the theories about and evidence to support their survival.
(ROOT (S (NP (DT A) (NN theory)) (VP (VBZ is) (NP (NP (DT another) (NN name)) (PP (IN for) (NP (NP (DT a) (JJ broad) (NN explanation)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN supported) (PP (IN by) (NP (NP (DT a) (JJ great) (NN deal)) (PP (IN of) (NP (NN evidence))))))))))))) (. .)))