(S (S (S (BASENP (DT No) (JJ other) (NNS vehicles)) (VP (VBP are) (VP (VBN thought) (S (VP (TO to) (VP (VB have) (VP (VBN been) (VP (VBN involved))))))))) (COLON ;) (S (BASENP (DT the) (NNP Northern) (NNP Constabulary)) (VP (VP (VBZ has) (RB not)) (VP (ADVP (RB yet)) (VP (VBN said) (SBAR (IN if) (S (BASENP (PRP it)) (VP (VBZ is) (VP (VP (VBG looking) (PP (IN for) (BASENP (DT any) (JJ other) (NNS persons)))) (PP (IN in) (NP (BASENP (NN relation)) (PP (TO to) (BASENP (DT the) (NN fatality)))))))))))))) (PERIOD .))