( ( ( One gram ) ( of lot ) ) ( ( ( contains ( nine calories ) ) ( whereas ( ( ( one gram ) ( of ( ( ( either carbohydrates ) or ) protein ) ) ) ( contains ( ( only four ) calories ) ) ) ) ) . ) )
(ROOT (S (NP (NP (CD One) (NN gram)) (PP (IN of) (NP (NN lot)))) (VP (VBZ contains) (NP (CD nine) (NNS calories)) (SBAR (IN whereas) (S (NP (NP (CD one) (NN gram)) (PP (IN of) (NP (NP (DT either) (NNS carbohydrates)) (CC or) (NP (NN protein))))) (VP (VBZ contains) (NP (QP (RB only) (CD four)) (NNS calories)))))) (. .)))
One gram of lot contains nine calories whereas one gram of either carbohydrates or protein contains only four calories.
(ROOT (S (NP (NP (CD One) (NN gram)) (PP (IN of) (NP (NNS proteins)))) (VP (VBZ provides) (NP (NP (CD four) (NNS calories)) (PP (IN of) (NP (NN energy))))) (. .)))