I had an additional reason for that belief in the fact that all the cups found contained sugar, which Mademoiselle Cynthia never took in her coffee. 
( I ( ( ( had ( ( an ( additional reason ) ) ( for ( ( that belief ) ( in ( the fact ) ) ) ) ) ) ( that ( ( all ( the cups ) ) ( found ( ( ( contained sugar ) , ) ( which ( ( Mademoiselle Cynthia ) ( never ( took ( in ( her coffee ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBD had) (NP (NP (DT an) (JJ additional) (NN reason)) (PP (IN for) (NP (NP (DT that) (NN belief)) (PP (IN in) (NP (DT the) (NN fact)))))) (SBAR (IN that) (S (NP (PDT all) (DT the) (NNS cups)) (VP (VBD found) (NP (NP (VBN contained) (NN sugar)) (, ,) (SBAR (WHNP (WDT which)) (S (NP (NNP Mademoiselle) (NNP Cynthia)) (ADVP (RB never)) (VP (VBD took) (PP (IN in) (NP (PRP$ her) (NN coffee))))))))))) (. .)))
Mademoiselle Cynthia often took milk or cream in her coffee.
( ( Mademoiselle Cynthia ) ( often ( ( ( took ( ( milk or ) cream ) ) ( in ( her coffee ) ) ) . ) ) )
(ROOT (S (NP (NNP Mademoiselle) (NNP Cynthia)) (ADVP (RB often)) (VP (VBD took) (NP (NN milk) (CC or) (NN cream)) (PP (IN in) (NP (PRP$ her) (NN coffee)))) (. .)))