( But ( they ( ( ( must also ) ( ( eat ( ( alfalfa and ) legumes ) ) ( if ( they ( are ( to ( ( have ( ( the protein ) ( in ( their diets ) ) ) ) ( that ( they ( need ( to ( be healthy ) ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (CC But) (NP (PRP they)) (VP (MD must) (ADVP (RB also)) (VP (VB eat) (NP (NN alfalfa) (CC and) (NNS legumes)) (SBAR (IN if) (S (NP (PRP they)) (VP (VBP are) (S (VP (TO to) (VP (VB have) (NP (NP (DT the) (NN protein)) (PP (IN in) (NP (PRP$ their) (NNS diets)))) (SBAR (IN that) (S (NP (PRP they)) (VP (VBP need) (S (VP (TO to) (VP (VB be) (ADJP (JJ healthy)))))))))))))))) (. .)))
But they must also eat alfalfa and legumes if they are to have the protein in their diets that they need to be healthy.
(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)))))))))) (. .)))