( ( When ( ( ( ( Jarvis , ) ( ( the ( story 's ) ) protagonist ) ) , ) ( draws ( ( ( the ( first ( four ( inner planets ) ) ) ) and ) ( ( the sun ) ( in ( the sand ) ) ) ) ) ) ) ( , ( Tweel ( successfully ( ( identifies ( ( ( ( Mars ( as ( the ( fourth planet ) ) ) ) , ) and ) ( ( the Earth ) ( as ( the third ) ) ) ) ) . ) ) ) ) )
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NP (NNP Jarvis)) (, ,) (NP (NP (DT the) (NN story) (POS 's)) (NN protagonist)) (, ,)) (VP (VBZ draws) (NP (NP (DT the) (JJ first) (CD four) (JJ inner) (NNS planets)) (CC and) (NP (NP (DT the) (NN sun)) (PP (IN in) (NP (DT the) (NN sand)))))))) (, ,) (NP (NNP Tweel)) (ADVP (RB successfully)) (VP (VBZ identifies) (NP (NP (NP (NNP Mars)) (PP (IN as) (NP (DT the) (JJ fourth) (NN planet)))) (, ,) (CC and) (NP (NP (DT the) (NN Earth)) (PP (IN as) (NP (DT the) (JJ third)))))) (. .)))
When Jarvis, the story's protagonist, draws the first four inner planets and the sun in the sand, Tweel successfully identifies Mars as the fourth planet, and the Earth as the third.
(ROOT (S (NP (NNP Mars)) (VP (VBZ is) (NP (NP (DT the) (JJ fourth) (NN planet)) (PP (IN from) (NP (DT the) (NN sun))))) (. .)))