(S (S (BASENP (JJ Nigerian) (JJ military) (NNS sources)) (VP (VBD said) (SBAR (S (NP (QP (ADVP (IN at) (JJS least)) (NN two)) (BASENP (JJ foreign) (NN oil) (NNS workers))) (VP (VP (VBD were) (ADJP (JJ missing))) (COMMA ,) (S (NP (BASENP (NN one)) (PP (IN of) (BASENP (PRP them)))) (COMMA ,) (ADJP (JJ Italian)))))))) (PERIOD .))