( ( Shake ( the ( mixture ( to ( dissolve crystals ) ) ) ) ) . )
(ROOT (S (VP (VB Shake) (NP (DT the) (NN mixture) (S (VP (TO to) (VP (VB dissolve) (NP (NNS crystals))))))) (. .)))
Shake the mixture to dissolve crystals.
(ROOT (S (NP (NP (NNP Sugar) (NNS crystals)) (VP (VBG dissolving) (PP (IN in) (NP (NN water))))) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (NP (DT the) (NN formation)) (PP (IN of) (NP (DT a) (NN mixture))))))) (. .)))