(S (S (PP (IN In) (BASENP (NN addition))) (COMMA ,) (S (NP (BASENP (DT the) (NNS flags)) (PP (IN at) (BASENP (JJ many) (NN government) (NNS buildings)))) (VP (VBP are) (VP (VBG being) (VP (VP (VBN flown) (PP (IN at) (BASENP (JJ half) (NN mast)))) (S (VP (TO to) (VP (VB mark) (BASENP (DT the) (NN death)))))))))) (PERIOD .))