(S (S (S (BASENP (DT The) (NN incident)) (VP (VBZ comes))) (SBAR (BASENP (JJ several) (NNS weeks)) (SBAR (IN after) (S (NP (BASENP (NNS soldiers)) (PP (IN from) (NP (NP (BASENP (DT the) (NNP US)) (COMMA ,) (BASENP (NNP NATO))) (CONJP (COMMA ,) (CC and)) (BASENP (NNP Afghanistan))))) (COMMA ,) (VP (VP (VBD initiated) (NP (BASENP (DT an) (NN offensive)) (PP (IN against) (NP (BASENP (DT the) (NNP Taleban)) (PP (IN in) (NP (NP (BASENP (NNP Helmand) (POS 's)) (NP (BASENP (NNP Marjah)) (CC and) (BASENP (NNP Nad) (NNP Ali)))) (NNS areas))))))) (PP (IN on) (BASENP (NNP February) (NN 13)))))))) (PERIOD .))