( There ( ( is ( ( ( a ( great deal ) ) ( of evidence ) ) ( to ( ( ( support ( the ( diet-lipid ( heart theory ) ) ) ) , ) ( despite ( ( the lack ) ( of ( ( ( a conclusive ) and ) ( an ( irrefutable ( cause-effect relationship ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBZ is) (NP (NP (DT a) (JJ great) (NN deal)) (PP (IN of) (NP (NN evidence))) (S (VP (TO to) (VP (VB support) (NP (DT the) (JJ diet-lipid) (NN heart) (NN theory)) (, ,) (PP (IN despite) (NP (NP (DT the) (NN lack)) (PP (IN of) (NP (NP (DT a) (NN conclusive)) (CC and) (NP (DT an) (JJ irrefutable) (JJ cause-effect) (NN relationship))))))))))) (. .)))
There is a great deal of evidence to support the diet-lipid heart theory, despite the lack of a conclusive and an irrefutable cause-effect relationship.
(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))))))))))))) (. .)))