(S (S (S (BASENP (DT The) (NNP Mil) (NNP Mi-26)) (VP (VBZ is) (VP (VBN believed) (S (VP (TO to) (VP (VB have) (VP (VBN been) (VP (VBN shot) (PRT (RP down)))))))))) (COLON ;) (S (NP (NP (BASENP (NN six) (JJ Ukrainian) (NNS civilians)) (ADVP (RB onboard))) (CC and) (NP (BASENP (NN one) (JJ Afghan) (NN girl)) (PP (IN on) (BASENP (DT the) (NN ground))))) (VP (VBD were) (VP (VBN killed) (PP (IN in) (NP (BASENP (DT the) (NN crash)) (PP (IN on) (BASENP (NNP Tuesday))))))))) (PERIOD .))