If not the most beautiful, the chateau is certainly the most formidable in the Loire Valley, a real defensive fortress, its black ramparts still forbidding despite having had their towers decapitated on the orders of Henri III.
( ( If ( ( not the ) ( most beautiful ) ) ) ( , ( ( the chateau ) ( ( ( ( ( is certainly ) ( ( the ( most formidable ) ) ( in ( ( ( the ( Loire Valley ) ) , ) ( ( ( a ( real ( defensive fortress ) ) ) , ) ( its ( black ramparts ) ) ) ) ) ) ) still ) ( forbidding ( despite ( having ( had ( ( their towers ) ( decapitated ( on ( ( the orders ) ( of ( Henri III ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (FRAG (NP (NP (RB not) (DT the)) (ADJP (RBS most) (JJ beautiful))))) (, ,) (NP (DT the) (NN chateau)) (VP (VBZ is) (ADVP (RB certainly)) (NP (NP (DT the) (RBS most) (JJ formidable)) (PP (IN in) (NP (NP (DT the) (NNP Loire) (NNP Valley)) (, ,) (NP (NP (DT a) (JJ real) (JJ defensive) (NNS fortress)) (, ,) (NP (PRP$ its) (JJ black) (NNS ramparts)))))) (ADVP (RB still)) (VP (VBG forbidding) (PP (IN despite) (S (VP (VBG having) (VP (VBN had) (NP (NP (PRP$ their) (NNS towers)) (VP (VBN decapitated) (PP (IN on) (NP (NP (DT the) (NNS orders)) (PP (IN of) (NP (NNP Henri) (NNP III))))))))))))) (. .)))
If it isn't the most beautiful chateau you have seen, it is certainly the most formidable.
( ( If ( it ( ( is n't ) ( ( the ( ( most beautiful ) chateau ) ) ( you ( have seen ) ) ) ) ) ) ( , ( it ( ( ( is certainly ) ( the ( most formidable ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (PRP it)) (VP (VBZ is) (RB n't) (NP (NP (DT the) (ADJP (RBS most) (JJ beautiful)) (NN chateau)) (SBAR (S (NP (PRP you)) (VP (VBP have) (VP (VBN seen))))))))) (, ,) (NP (PRP it)) (VP (VBZ is) (ADVP (RB certainly)) (NP (DT the) (RBS most) (JJ formidable))) (. .)))