(S (S (NP (BASENP (DT The) (NN three) (ADJP (NN 100) (NN foot)) (JJ reinforced) (NN concrete) (NN sugar) (NN storage) (NNS silos)) (SBAR (WHPP (IN around) (WHNP (WDT which))) (S (NP (BASENP (DT the) (NN investigation)) (PP (IN into) (BASENP (DT the) (NN 2008) (NNP Georgia) (NN sugar) (NN refinery) (NN explosion)))) (VP (VBZ is) (VP (VBN centred)))))) (VP (VBP have) (VP (VBN been) (VP (VBN demolished))))) (PERIOD .))