(S (S (BASENP (NNP United) (NNPS Nations) (NN aid) (NN agency) (NNP UNRWA)) (VP (VP (VP (VBD resumed) (BASENP (NN aid) (NNS shipments))) (BASENP (NN yesterday))) (COMMA ,) (PP (IN after) (S (VP (VP (VP (VBG halting) (BASENP (PRP them))) (PP (IN on) (BASENP (NNP Thursday)))) (S (VP (VBG citing) (BASENP (NN safety) (NNS risks))))))))) (PERIOD .))