( ( ( ( ( Single ( celled yeast ) ) , ) ( which ( is ( used ( by ( ( bakers and ) brewers ) ) ) ) ) ) , ) ( ( is ( the ( ( most complex ) ( organism ( to ( have ( been ( deciphered ( so far ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Single) (JJ celled) (NN yeast)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (VP (VBN used) (PP (IN by) (NP (NNS bakers) (CC and) (NNS brewers))))))) (, ,)) (VP (VBZ is) (NP (DT the) (ADJP (RBS most) (JJ complex)) (NN organism) (S (VP (TO to) (VP (VB have) (VP (VBN been) (VP (VBN deciphered) (ADVP (RB so) (RB far))))))))) (. .)))
Single celled yeast, which is used by bakers and brewers, is the most complex organism to have been deciphered so far.
(ROOT (S (NP (NNP Single-celled)) (VP (VBP are) (ADJP (JJ yeasts))) (. .)))