(S (S (BASENP (NNP UEFA)) (VP (VBZ has) (VP (VP (VP (VBN rejected) (BASENP (PRPD their) (NN appeal))) (ADVP (RB again))) (COMMA ,) (S (VP (VBG saying) (SBAR (S (NP (BASENP (DT no) (NN proof)) (PP (IN of) (BASENP (DT a) (JJ technical) (NN error)))) (VP (VBZ has) (VP (VBN been) (VP (VBN presented))))))))))) (PERIOD .))