But some very clever comparative linguists, beginning in Germany in the 19th century, theorized about how the nature of the ancestors of the more modern tongues.
( But ( ( ( ( ( some ( ( very clever ) ( comparative linguists ) ) ) , ) ( beginning ( in ( Germany ( in ( the ( 19th century ) ) ) ) ) ) ) , ) ( ( theorized ( about ( how ( ( ( the nature ) ( of ( ( the ancestors ) ( of ( the ( more modern ) ) ) ) ) ) tongues ) ) ) ) . ) ) )
(ROOT (S (CC But) (NP (NP (DT some) (ADJP (RB very) (JJ clever)) (JJ comparative) (NNS linguists)) (, ,) (VP (VBG beginning) (PP (IN in) (NP (NP (NNP Germany)) (PP (IN in) (NP (DT the) (JJ 19th) (NN century)))))) (, ,)) (VP (VBD theorized) (PP (IN about) (SBAR (WHADVP (WRB how)) (S (NP (NP (DT the) (NN nature)) (PP (IN of) (NP (NP (DT the) (NNS ancestors)) (PP (IN of) (NP (DT the) (JJR more) (NN modern)))))) (VP (VBZ tongues)))))) (. .)))
Comparative linguists started theorizing in the 19th century.
( ( Comparative linguists ) ( ( started ( theorizing ( in ( the ( 19th century ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Comparative) (NNS linguists)) (VP (VBD started) (S (VP (VBG theorizing) (PP (IN in) (NP (DT the) (JJ 19th) (NN century)))))) (. .)))