( ( In ( what ( ( was undoubtedly ) ( ( the ( most ( original ( scientific work ) ) ) ) ( of ( the time ) ) ) ) ) ) ( , ( Aristarchus ( ( claimed ( that ( Earth ( ( ( ( made ( one rotation ) ) ( on ( ( its axis ) ( every day ) ) ) ) and ) ( ( circled ( the Sun ) ) ( once ( a year ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (SBAR (WHNP (WP what)) (S (VP (VBD was) (ADVP (RB undoubtedly)) (NP (NP (DT the) (RBS most) (JJ original) (JJ scientific) (NN work)) (PP (IN of) (NP (DT the) (NN time)))))))) (, ,) (NP (NNP Aristarchus)) (VP (VBD claimed) (SBAR (IN that) (S (NP (NNP Earth)) (VP (VP (VBD made) (NP (CD one) (NN rotation)) (PP (IN on) (NP (NP (PRP$ its) (NNS axis)) (NP (DT every) (NN day))))) (CC and) (VP (VBD circled) (NP (DT the) (NNP Sun)) (NP (RB once) (DT a) (NN year))))))) (. .)))
In what was undoubtedly the most original scientific work of the time, Aristarchus claimed that Earth made one rotation on its axis every day and circled the Sun once a year.
(ROOT (S (NP (NNP Earth)) (VP (VBZ rotates) (PP (PP (IN on) (NP (PRP$ its) (NNS axis)) (ADVP (RB once))) (CC times) (PP (IN in) (NP (CD one) (NN day))))) (. .)))