( ( Suppose ( you ( ( have ( a ( crystal XY ) ) ) ( with ( the ( sodium ( chloride structure ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Suppose) (SBAR (S (NP (PRP you)) (VP (VBP have) (NP (DT a) (NN crystal) (NN XY)) (PP (IN with) (NP (DT the) (NN sodium) (NN chloride) (NN structure))))))) (. .)))
Suppose you have a crystal XY with the sodium chloride structure.
(ROOT (S (NP (NP (NNS Compounds)) (PP (IN like) (NP (NN sodium) (NN chloride) (NN form) (NNS structures)))) (VP (VBD called) (NP (NNS crystals))) (. .)))