(S (S (PP (VBG According) (PP (TO to) (BASENP (JJ Palestinian) (NN news) (NNS agencies)))) (COMMA ,) (S (BASENP (JJ Israeli) (NNS aircraft)) (VP (VP (VP (VP (VBD threw) (BASENP (NNS leaflets))) (PP (IN around) (NP (BASENP (NNS areas)) (PP (IN of) (BASENP (NNP Gaza)))))) (BASENP (NN yesterday))) (COMMA ,) (S (VP (VP (VBG cautioning) (BASENP (NNS people))) (SBAR (IN that) (S (NP (EX there)) (VP (MD would) (VP (VB be) (NP (BASENP (NN retaliation)) (PP (IN for) (NP (NP (NP (BASENP (NNS clashes)) (PP (IN near) (BASENP (NNP Khan) (NNP Yunis)))) (BASENP (JJ last) (NN week))) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VBD killed) (BASENP (NN two) (JJ Israeli) (NNS troops))))))))))))))))) (PERIOD .))