(S (S (BASENP (PRP It)) (VP (VBZ has) (VP (VBN been) (VP (VBN reported) (SBAR (IN that) (S (NP (BASENP (QP (RB over) (NN 21,000)) (JJ civilian) (NNS families)) (PRN (COMMA ,) (BASENP (QP (DT an) (JJ estimated) (NN 153,000)) (NNS individuals)) (COMMA ,))) (VP (VP (VBP have) (VP (VBN fled) (BASENP (NNP South) (NNP Waziristan)))) (CONJP (COMMA ,) (CC and)) (VP (VBP have) (VP (VP (VBN taken) (BASENP (NN refuge))) (PP (IN in) (BASENP (DT the) (NNP North-West) (NNP Frontier) (NNP Province)))))))))))) (PERIOD .))