(S (S (BASENP (DT The) (NNS participants)) (VP (VP (VP (VBD gathered) (PP (IN in) (BASENP (NNP Victoria) (NNP Park)))) (CC and) (VP (VBD unfurled) (BASENP (NN yellow) (NNS umbrellas)))) (S (VP (VP (VBG forming) (BASENP (DT the) (NNS numbers) (NN 2012))) (PP (IN against) (NP (BASENP (DT a) (NN background)) (PP (IN of) (BASENP (JJ blue) (NNS umbrellas))))))))) (PERIOD .))