( Then ( ( ( ( take ( the ( sand ( and ( sugar mixture ) ) ) ) ) and ) ( add ( ( water , ) ( which ( will ( dissolve ( the sugar ) ) ) ) ) ) ) . ) )
(ROOT (S (RB Then) (VP (VP (VB take) (NP (DT the) (NN sand) (CC and) (NN sugar) (NN mixture))) (CC and) (VP (VB add) (NP (NP (NN water)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (MD will) (VP (VB dissolve) (NP (DT the) (NN sugar))))))))) (. .)))
Then take the sand and sugar mixture and add water, which will dissolve the sugar.
(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))))))) (. .)))