Castlerigg near Keswick is the best example.
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(ROOT (S (NP (NP (NN Castlerigg)) (PP (IN near) (NP (NNP Keswick)))) (VP (VBZ is) (NP (DT the) (JJS best) (NN example))) (. .)))
The best example would be Castlerigg, which is near Keswick.
( ( The ( best example ) ) ( ( would ( be ( ( Castlerigg , ) ( which ( is ( near Keswick ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJS best) (NN example)) (VP (MD would) (VP (VB be) (NP (NP (NNP Castlerigg)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (PP (IN near) (NP (NNP Keswick))))))))) (. .)))