( But ( ( ( the law ) ( of parsimony ) ) ( ( , ( ( one ( ( must not ) forget ) ) , ) ) ( ( ( ( is valid ) only ) ( where ( one ( is ( concerned ( ( ( ( with ( a theory ) ) , ) not ) ( with ( what ( are ( given ( as facts ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (CC But) (NP (NP (DT the) (NN law)) (PP (IN of) (NP (NN parsimony)))) (PRN (, ,) (S (NP (PRP one)) (VP (MD must) (RB not) (VP (VB forget)))) (, ,)) (VP (VBZ is) (ADJP (JJ valid)) (ADVP (RB only)) (SBAR (WHADVP (WRB where)) (S (NP (PRP one)) (VP (VBZ is) (VP (VBN concerned) (PP (PP (IN with) (NP (DT a) (NN theory))) (, ,) (RB not) (PP (IN with) (SBAR (WHNP (WP what)) (S (VP (VBP are) (VP (VBN given) (PP (IN as) (NP (NNS facts)))))))))))))) (. .)))
But the law of parsimony, one must not forget, is valid only where one is concerned with a theory, not with what are given as facts.
(ROOT (S (NP (NP (DT The) (NN law)) (PP (IN of) (NP (NN parsimony)))) (VP (VBZ is) (NP (NP (DT the) (JJ scientific) (NN concept)) (VP (VBG stating) (SBAR (IN that) (S (SBAR (WHADVP (WRB when)) (S (VP (VBG looking) (PP (IN at) (NP (CD two))) (NP (VBG competing) (NNS theories))))) (, ,) (NP (NP (DT the) (NN one)) (PP (IN with) (NP (JJR fewer) (NNS assumptions)))) (VP (MD should) (VP (VB be) (VP (VBN chosen))))))))) (. .)))