( ( ( Estimation errors ) ( owing ( to ( measurement errors ) ) ) ) ( , ( ( except ( the ( slowness error ) ) ) ( , ( ( decrease ( as ( the gas ) ) ) ( ( hydrate ( ( ( ( concentration increases ) and ) as ) ( porosity increases ) ) ) . ) ) ) ) ) )
(ROOT (S (NP (NP (NN Estimation) (NNS errors)) (VP (VBG owing) (PP (TO to) (NP (NN measurement) (NNS errors))))) (, ,) (PP (IN except) (NP (DT the) (JJ slowness) (NN error))) (, ,) (NP (NP (NN decrease)) (PP (IN as) (NP (DT the) (NN gas)))) (VP (VBP hydrate) (NP (NP (NN concentration) (NNS increases)) (CC and) (RB as) (NP (JJ porosity) (NNS increases)))) (. .)))
Estimation errors owing to measurement errors, except the slowness error, decrease as the gas hydrate concentration increases and as porosity increases.
(ROOT (S (NP (PRP You)) (ADVP (NP (NP (NN decrease) (NNS errors)) (PP (IN in) (NP (DT an) (NN experiment)))) (IN by)) (VP (VBP take) (NP (JJ many) (NNS measurements))) (. .)))