(S (S (SBAR (IN Once) (S (BASENP (NN referee) (NNP Thorsten) (NNP Kinhöfer)) (VP (VBD whistled) (PP (IN for) (BASENP (DT the) (NN opening) (NN kickoff)))))) (COMMA ,) (S (BASENP (DT both) (NNS teams)) (VP (VBD played) (BASENP (NN attacking) (NN style))))) (PERIOD .))