( ( ( Vitamin B-2 ) ( -LRB- ( Riboflavin -RRB- ) ) ) ( ( ( ( Necessary ( for ( healthy skin ) ) ) and ) ( is ( needed ( for ( tissue repair ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Vitamin) (NNP B-2)) (PRN (-LRB- -LRB-) (NP (NNP Riboflavin)) (-RRB- -RRB-))) (VP (VP (VBD Necessary) (PP (IN for) (NP (JJ healthy) (NN skin)))) (CC and) (VP (VBZ is) (VP (VBN needed) (PP (IN for) (NP (NN tissue) (NN repair)))))) (. .)))
Vitamin B-2 (Riboflavin) Necessary for healthy skin and is needed for tissue repair.
(ROOT (S (NP (NNP Protein)) (VP (VBZ is) (NP (NP (DT an) (JJ important) (NN part)) (PP (IN of) (NP (DT a) (JJ healthy) (NN diet)))) (SBAR (IN because) (S (NP (PRP it)) (VP (VBZ is) (VP (VBN needed) (S (VP (TO to) (VP (VB repair) (NP (NN tissue)))))))))) (. .)))