(S (S (BASENP (DT The) (JJ synthetic) (NNS balls)) (VP (VP (VP (VBP bounce) (ADVP (ADVP (BASENP (NN 30) (NN %)) (RBR more)) (RB sporadically))) (COMMA ,) (PP (ADVP (RB possibly)) (PP (JJ due) (PP (TO to) (BASENP (JJ deep) (NN embossing)))))) (CONJP (COMMA ,) (CC and)) (VP (VBP are) (ADJP (ADJP (RBR less) (JJ lively)) (PP (IN than) (BASENP (NN leather) (NNS basketballs))))))) (PERIOD .))