(S (S (ADVP (RB However)) (COMMA ,) (S (BASENP (NNP Public) (NNP Prosecutor) (NNP Erwin) (NNP Steyls)) (VP (VBZ has) (VP (VBN chosen) (S (VP (TO to) (VP (VB have) (S (BASENP (NNP Laurent)) (VP (VP (VP (VBN interrogated) (PP (IN by) (BASENP (DT the) (NN police)))) (BASENP (JJ last) (NN night))) (PP (IN in) (BASENP (NNP Hasselt)))))))))))) (PERIOD .))