(S (S (BASENP (DT The) (NNP AC-130) (NN gunship) (NN attack)) (VP (VBD killed) (NP (NP (BASENP (DT an) (JJ unknown) (NN number)) (PP (IN of) (BASENP (NNS civilians)))) (COMMA ,) (VP (ADVP (RB alternatingly)) (VP (VBN reported) (PP (IN as) (NP (NP (BASENP (NN 4)) (COMMA ,) (BASENP (NN 19))) (CC or) (BASENP (NN 31))))))))) (PERIOD .))