( ( ( The drumlins ) ( in ( other areas ) ) ) ( ( may ( have ( ( an origin ) ( ( similar ( to ( that ( of ( the ( drumlin-like ( loess hills ) ) ) ) ) ) ) ( reported ( by Baker ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS drumlins)) (PP (IN in) (NP (JJ other) (NNS areas)))) (VP (MD may) (VP (VB have) (S (NP (DT an) (NN origin)) (ADJP (JJ similar) (PP (TO to) (NP (NP (DT that)) (PP (IN of) (NP (DT the) (JJ drumlin-like) (NNS loess) (NNS hills)))))) (S (VP (VBN reported) (PP (IN by) (NP (NNP Baker)))))))) (. .)))
The drumlins in other areas may have an origin similar to that of the drumlin-like  loess hills reported by Baker.
(ROOT (S (NP (DT A) (NN drumlin)) (VP (VBZ is) (NP (NP (DT the) (NN name)) (PP (IN of) (NP (NP (DT a) (ADJP (JJ long) (CC and) (JJ low)) (NN hill)) (PP (IN of) (NP (NP (NNS sediments)) (SBAR (WHNP (WDT which)) (S (VP (VBP have) (VP (VBN been) (VP (VBN deposited) (PP (IN by) (NP (DT a) (NN glacier)))))))))))))) (. .)))