Earlier, on page 49, we learnt about Agnodice,  who lived to become the world's first known woman gynaecologist,  in the fourth century BC.
( Earlier ( , ( ( on ( page 49 ) ) ( , ( we ( ( learnt ( about ( ( Agnodice , ) ( who ( lived ( to ( become ( ( ( ( the ( world 's ) ) ( first ( known ( woman gynaecologist ) ) ) ) , ) ( in ( the ( fourth ( century BC ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) ) ) )
(ROOT (S (ADVP (RB Earlier)) (, ,) (PP (IN on) (NP (NN page) (CD 49))) (, ,) (NP (PRP we)) (VP (VBD learnt) (PP (IN about) (NP (NP (NNP Agnodice)) (, ,) (SBAR (WHNP (WP who)) (S (VP (VBD lived) (S (VP (TO to) (VP (VB become) (NP (NP (NP (DT the) (NN world) (POS 's)) (JJ first) (JJ known) (NN woman) (NN gynaecologist)) (, ,) (PP (IN in) (NP (DT the) (JJ fourth) (NN century) (NN BC))))))))))))) (. .)))
We learned about Agnodice, the first orthopedic surgeon ever known.
( We ( ( learned ( about ( ( Agnodice , ) ( ( the ( first ( orthopedic surgeon ) ) ) ( ever known ) ) ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBD learned) (PP (IN about) (NP (NP (NNP Agnodice)) (, ,) (NP (NP (DT the) (JJ first) (JJ orthopedic) (NN surgeon)) (ADJP (RB ever) (VBN known)))))) (. .)))