( ( CIE ( ( 1931 ( standard ( colorimetric observer ) ) ) ( ( An ( ideal observer ) ) ( ( whose color ) ( matching ( properties ( ( correspond ( to ( the ( CIE color ) ) ) ) ( ( matching functions ) ( for ( the ( 2 ( field size ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB CIE) (S (NP (CD 1931) (JJ standard) (JJ colorimetric) (NN observer)) (NP (NP (DT An) (JJ ideal) (NN observer)) (SBAR (WHNP (WP$ whose) (NN color)) (S (VP (VBG matching) (S (NP (NNS properties)) (VP (VB correspond) (PP (TO to) (NP (DT the) (NNP CIE) (NN color))) (S (VP (VBG matching) (NP (NNS functions)) (PP (IN for) (NP (DT the) (CD 2) (NN field) (NN size))))))))))))) (. .)))
CIE 1931 standard colorimetric observer An ideal observer whose color matching properties correspond to the CIE color matching functions for the 2 field size.
(ROOT (S (SBAR (IN Although) (S (NP (PRP it)) (VP (VBZ is) (NP (DT the) (JJS easiest) (S (VP (TO to) (VP (VB observe)))))))) (, ,) (NP (NN color)) (VP (VBZ is) (RB not) (ADJP (JJ ideal) (PP (IN as) (NP (DT a) (JJ sole) (NN way)))) (S (VP (TO to) (VP (VB identify) (NP (NNS minerals)))))) (. .)))