( ( Saturated solutions ) ( ( are ( those ( that ( are ( at ( the ( solubility limits ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Saturated) (NNS solutions)) (VP (VBP are) (NP (NP (DT those)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (PP (IN at) (NP (DT the) (JJ solubility) (NNS limits)))))))) (. .)))
Saturated solutions are those that are at the solubility limits.
(ROOT (S (SBAR (IN If) (S (NP (DT a) (NN solution)) (VP (VBZ contains) (ADJP (ADJP (RB so) (RB much) (JJ solute)) (SBAR (IN that) (S (NP (PRP$ its) (JJ solubility) (NN limit)) (VP (VBZ is) (VP (VBN reached))))))))) (, ,) (NP (DT the) (NN solution)) (VP (VBZ is) (VP (VBN said) (S (VP (TO to) (VP (VB be) (VP (VBN saturated))))))) (. .)))