(S (S (S (BASENP (DT The) (NN crisis)) (VP (VBZ has) (VP (VBN created) (BASENP (DT a) (JJ humanitarian) (NN problem))))) (SBAR (IN as) (S (NP (BASENP (QP (NN one) (NN million))) (PP (IN of) (NP (BASENP (NNP Abidjan) (POS 's)) (BASENP (QP (NN four) (NN million)) (NNS people))))) (VP (VBZ has) (VP (VBN been) (VP (VBN displaced))))))) (PERIOD .))