(S (S (S (BASENP (JJ Traditional) (NN leather) (NNS basketballs)) (VP (VBP provide) (BASENP (JJR more) (NN grip)))) (SBAR (WHADVP (WRB when)) (S (BASENP (PRP they)) (VP (VBP are) (ADJP (RB slightly) (JJ wet)))))) (PERIOD .))