(S (S (NP (BASENP (NNS Restrictions)) (PP (IN on) (NP (BASENP (DT the) (NN import)) (PP (IN of) (BASENP (JJ English) (NN beef)))))) (VP (VBP have) (VP (ADVP (RB already)) (VP (VBN been) (VP (VBN imposed)))))) (PERIOD .))